{"id":927,"date":"2026-10-13T14:35:48","date_gmt":"2026-10-13T11:35:48","guid":{"rendered":"https:\/\/igripstud.eu\/?page_id=927"},"modified":"2026-10-13T14:35:50","modified_gmt":"2026-10-13T11:35:50","slug":"tractor-stud-installation-guide","status":"publish","type":"page","link":"https:\/\/igripstud.eu\/en\/tractor-stud-installation-guide\/","title":{"rendered":"iGrip SS Tire Studs for Farming: Size &#038; Installation Guide"},"content":{"rendered":"<div id=\"igrip-guide\" data-asset-base=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/\" lang=\"en\" data-no-translation=\"\">\r\n<a class=\"skip\" href=\"#selection\">Skip to model selection<\/a>\r\n<div>\r\n<nav class=\"guide-breadcrumbs wrap\" aria-label=\"Installation guides\"><a href=\"https:\/\/igripstud.eu\/en\/\">Home<\/a> \u203a <span aria-current=\"page\">Tractor tire stud selection and installation<\/span><\/nav><section class=\"hero\" aria-labelledby=\"guide-title\"><img class=\"hero-photo\" src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/tractor-winter.webp\" alt=\"Tractor with snow-clearing equipment in a winter field\" width=\"1920\" height=\"1282\" fetchpriority=\"high\" srcset=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/tractor-winter-640.webp 640w, https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/tractor-winter-960.webp 960w, https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/tractor-winter-1280.webp 1280w, https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/tractor-winter.webp 1920w\" sizes=\"(max-width: 960px) 100vw, 640px\" decoding=\"async\" loading=\"eager\" data-no-lazy=\"1\"><div class=\"wrap\"><p class=\"eyebrow orange\">iGrip SS \u00b7 A practical guide for farming<\/p><h1 id=\"guide-title\">iGrip SS studs<br>for tractor tires.<br><em>Choose the right fit.<\/em><\/h1><p class=\"lead\">Our iGrip SS screw-in tire studs help tractors gain traction on ice and packed snow. Compare stud sizes, calculate your quantity and follow our installation guide for farming.<\/p><div class=\"actions\"><a class=\"btn\" href=\"#selection\">Choose an SS model <span aria-hidden=\"true\">\u2193<\/span><\/a><a class=\"btn outline\" href=\"#installation\">How to install <span aria-hidden=\"true\">\u2197<\/span><\/a><\/div><div class=\"hero-proof\"><span>SS support shoulder<\/span><span>Tungsten carbide tip<\/span><span>Removable<\/span><\/div><\/div><\/section>\r\n<div class=\"wrap\"><nav class=\"quick\" aria-label=\"Three key steps\"><a href=\"#selection\"><b>01<\/b><div><strong>Which stud should I choose?<\/strong><small>Based on your tread depth<\/small><\/div><\/a><a href=\"#quantity\"><b>02<\/b><div><strong>How many will I need?<\/strong><small>Calculate each axle separately<\/small><\/div><\/a><a href=\"#installation\"><b>03<\/b><div><strong>How do I install them?<\/strong><small>Steps, diagrams and video<\/small><\/div><\/a><\/nav><\/div>\r\n<nav class=\"nav\" aria-label=\"Guide sections\"><div class=\"wrap\"><a href=\"#measuring\">Measuring<\/a><a href=\"#selection\">Model<\/a><a href=\"#quantity\">Quantity<\/a><a href=\"#layout\">Layout<\/a><a href=\"#installation\">Installation<\/a><a href=\"#video\">Video<\/a><a href=\"#removal\">Removal<\/a><a href=\"#faq\">FAQ<\/a><\/div><\/nav><div class=\"wrap guide-meta\"><p>Guide by <a href=\"https:\/\/igripstud.eu\/en\/\">iGrip<\/a> \u00b7 Updated <time datetime=\"2026-10-13\">13 October 2026<\/time> \u00b7 SS-15 to SS-50, without R or HD suffixes.<\/p><\/div>\r\n\r\n<section class=\"section\" id=\"measuring\"><div class=\"wrap\"><p class=\"eyebrow\">01 \/ Start with the tire<\/p><h2>Measure tire tread depth.<br>Allow 2 mm clearance.<\/h2><p class=\"intro\">Minimum tread depth equals the stud's penetration depth plus 2 mm. Measure the remaining tread height at the intended installation points. Select studs by these measurements, block width and rubber condition, rather than tractor size.<\/p><div class=\"split spaced\"><div><ol class=\"numbered\"><li><b>Clean and inspect the tread block.<\/b>Remove dirt and stones. Choose sound rubber with no cracks or tears.<\/li><li><b>Measure from the bottom of the groove.<\/b>Use a tread depth gauge or ruler to measure up to the top of the tread block.<\/li><li><b>Check several points.<\/b>Repeat around the tire and on different blocks. Use the lowest reading from your intended installation points to select the model.<\/li><li><b>Check front and rear tires separately.<\/b>Record the tire make, model, size and measured tread height. Check the block width too.<\/li><\/ol><\/div><figure class=\"diagram\"><svg viewbox=\"0 0 520 330\" role=\"img\" aria-label=\"Measure tread height from the bottom of the groove to the top of the block. The casing lies deeper.\"><defs><pattern id=\"rubber\" width=\"9\" height=\"9\" patternunits=\"userSpaceOnUse\"><path d=\"M0 9L9 0\" stroke=\"#49525a\" stroke-width=\"1\"><\/path><\/pattern><\/defs><path d=\"M20 272V235H100V92H280V235H500V272Z\" fill=\"#283239\"><\/path><path d=\"M20 272V235H100V92H280V235H500V272Z\" fill=\"url(#rubber)\"><\/path><path d=\"M20 288H500\" stroke=\"#7d8b95\" stroke-width=\"11\"><\/path><path d=\"M105 77H370V88H305V235H292V88H105Z\" fill=\"#b8c6cf\"><\/path><rect x=\"300\" y=\"42\" width=\"71\" height=\"38\" rx=\"4\" fill=\"#263841\"><\/rect><text x=\"335\" y=\"67\" fill=\"white\" font-size=\"19\" text-anchor=\"middle\">mm<\/text><path d=\"M383 92V235m-8-143h16m-16 143h16\" stroke=\"#ca5c0d\" stroke-width=\"3\"><\/path><path d=\"M280 92H410M280 235H410\" stroke=\"#dd8d52\" stroke-dasharray=\"5 5\"><\/path><text x=\"404\" y=\"164\" fill=\"#a54706\" font-size=\"17\" font-weight=\"700\">H<\/text><text x=\"25\" y=\"32\" font-size=\"19\" fill=\"#182126\" font-weight=\"700\">Measure the block height<\/text><text x=\"24\" y=\"313\" font-size=\"14\" fill=\"#5d6267\">The casing lies below the bottom of the groove.<\/text><text x=\"306\" y=\"262\" font-size=\"14\" fill=\"#edf2f5\">Groove bottom<\/text><\/svg><figcaption>Tread depth H is the block height above the bottom of the groove. It is not the total rubber thickness down to the casing.<\/figcaption><\/figure><\/div><div class=\"formula\"><div><p class=\"eyebrow\">Our selection rule<\/p><p class=\"big\">Minimum tread depth<br>= penetration depth <span>+ 2 mm<\/span><\/p><\/div><p class=\"small\"><strong>We add the 2 mm allowance to the length that enters the tire.<\/strong> For example, SS-30 penetrates 28 mm, so it needs at least <strong>28 + 2 = 30 mm<\/strong> of tread. Its overall length is 32 mm, with 4 mm above the rubber.<\/p><\/div><\/div><\/section>\r\n\r\n<section class=\"section soft\" id=\"selection\"><div class=\"wrap\"><p class=\"eyebrow\">02 \/ Find your SS model<\/p><h2>Choose your iGrip SS model.<br>Use actual tread depth.<\/h2><p class=\"intro\">Compare SS-15, SS-18, SS-25, SS-30, SS-40 and SS-50 using the table and selector below. Enter your lowest measured tread depth. We suggest models whose minimum tread requirement is met and is no more than 10 mm below your measurement. For example, 40 mm of tread gives SS-40 and SS-30.<\/p><div class=\"selector\"><div class=\"selector-body\"><div><label for=\"depth\">Tread depth at the installation point<\/label><div class=\"depth-input\"><input id=\"depth\" type=\"number\" min=\"0\" max=\"200\" step=\"0.1\" placeholder=\"E.g. 30\" inputmode=\"decimal\" aria-describedby=\"depth-help\"><span>mm<\/span><\/div><p class=\"small\" id=\"depth-help\">Measure each tire group separately. Enter the actual measurement.<\/p><a class=\"small\" href=\"#measuring\">Show me how to measure \u2191<\/a><\/div><div class=\"results\" id=\"model-result\" aria-live=\"polite\"><strong>Enter your tread depth.<\/strong><p class=\"small\">We consider all six SS models. For example, for 40 mm of tread, we suggest SS-40 or SS-30.<\/p><\/div><\/div><\/div><div class=\"table-wrap\"><table class=\"localized-mobile-table\"><caption>iGrip SS tire stud sizes and minimum tread depth<\/caption><thead><tr><th scope=\"col\">Model<\/th><th scope=\"col\">Overall length<\/th><th scope=\"col\">Into the tire<\/th><th scope=\"col\">Above the rubber<\/th><th scope=\"col\">Minimum tread depth<br>(penetration depth + 2 mm)<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-15-igrip-shouldered-tire-studs\/\" data-product-code=\"SS-15\">SS-15<\/a><\/th><td data-column-label=\"Overall length\">16 mm<\/td><td data-column-label=\"Into the tire\">13 mm<\/td><td data-column-label=\"Above the rubber\">3 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>15 mm<\/strong><\/td><\/tr><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-18-igrip-shouldered-tire-studs\/\" data-product-code=\"SS-18\">SS-18<\/a><\/th><td data-column-label=\"Overall length\">20 mm<\/td><td data-column-label=\"Into the tire\">17 mm<\/td><td data-column-label=\"Above the rubber\">3 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>19 mm<\/strong><\/td><\/tr><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-25-shouldered-igrip-tire-studs\/\" data-product-code=\"SS-25\">SS-25<\/a><\/th><td data-column-label=\"Overall length\">27 mm<\/td><td data-column-label=\"Into the tire\">23 mm<\/td><td data-column-label=\"Above the rubber\">4 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>25 mm<\/strong><\/td><\/tr><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-30-shouldered-igrip-tire-studs\/\" data-product-code=\"SS-30\">SS-30<\/a><\/th><td data-column-label=\"Overall length\">32 mm<\/td><td data-column-label=\"Into the tire\">28 mm<\/td><td data-column-label=\"Above the rubber\">4 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>30 mm<\/strong><\/td><\/tr><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-40-shouldered-igrip-tire-studs\/\" data-product-code=\"SS-40\">SS-40<\/a><\/th><td data-column-label=\"Overall length\">42 mm<\/td><td data-column-label=\"Into the tire\">35 mm<\/td><td data-column-label=\"Above the rubber\">7 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>37 mm<\/strong><\/td><\/tr><tr><th scope=\"row\" data-column-label=\"Model\"><a href=\"https:\/\/igripstud.eu\/en\/product\/ss-50-shouldered-igrip-tire-studs\/\" data-product-code=\"SS-50\">SS-50<\/a><\/th><td data-column-label=\"Overall length\">52 mm<\/td><td data-column-label=\"Into the tire\">45 mm<\/td><td data-column-label=\"Above the rubber\">7 mm<\/td><td data-column-label=\"Minimum tread depth (penetration depth + 2 mm)\"><strong>47 mm<\/strong><\/td><\/tr><\/tbody><\/table><\/div><p class=\"small spaced\">Model numbers are product names, not exact overall lengths. Compare overall length, penetration and protrusion separately. Also check block width, rubber condition and working conditions. These dimensions cover SS models without R or HD suffixes.<\/p><div class=\"notice\"><strong>Longer does not automatically mean a better fit.<\/strong>If a model needs more tread depth than you have, choose a suitable shorter model or send us your tire details. Do not install a longer stud in tread that is too shallow.<\/div><\/div><\/section>\r\n\r\n<section class=\"section\" id=\"ss-benefits\"><div class=\"wrap\"><p class=\"eyebrow\">Why do we recommend SS for tractors?<\/p><h2>Why choose SS studs?<br>The support shoulder.<\/h2><p class=\"intro\">Our SS (<em>Shoulder Stud<\/em>) studs have a wide support shoulder. It spreads the load through the rubber and helps prevent the stud from sinking deeper.<\/p><div class=\"compare\"><figure><h3>Stud without a support shoulder<\/h3><svg viewbox=\"0 0 470 320\" role=\"img\" aria-label=\"Schematic showing a stud without a support shoulder sinking into the rubber\"><path d=\"M20 130H450V303H20Z\" fill=\"#303b42\"><\/path><path d=\"M20 130H450\" stroke=\"#7b8b95\" stroke-dasharray=\"6 5\"><\/path><g transform=\"translate(140,150)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><\/g><text x=\"245\" y=\"92\" fill=\"#7d3a2c\" font-size=\"16\">May sink<\/text><text x=\"245\" y=\"116\" fill=\"#7d3a2c\" font-size=\"16\">into the rubber<\/text><path d=\"M211 151v64m-8-10 8 10 8-10\" fill=\"none\" stroke=\"#a54a37\" stroke-width=\"3\"><\/path><path d=\"M140 18v58m-9-12 9 12 9-12\" fill=\"none\" stroke=\"#182126\" stroke-width=\"3\"><\/path><text x=\"170\" y=\"49\" fill=\"#182126\" font-size=\"14\">Load<\/text><\/svg><p>Under load, a stud body without enough support may sink deeper. This makes its head harder to reach with the removal tool.<\/p><\/figure><figure><h3>iGrip SS with a support shoulder<\/h3><svg viewbox=\"0 0 470 320\" role=\"img\" aria-label=\"The iGrip SS shoulder is seated in the rubber, with its top flush with the rubber surface\"><path d=\"M20 130H450V303H20Z\" fill=\"#303b42\"><\/path><path d=\"M20 130H450\" stroke=\"#7b8b95\" stroke-dasharray=\"6 5\"><\/path><g transform=\"translate(140,110)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><rect x=\"-30\" y=\"21\" width=\"60\" height=\"8\" rx=\"1\" fill=\"#f57b20\" stroke=\"#71350a\" stroke-width=\"2\"><\/rect><path d=\"M-23 22v5m46-5v5\" stroke=\"#71350a\" stroke-width=\"3\"><\/path><\/g><text x=\"257\" y=\"92\" fill=\"#914209\" font-size=\"16\">Shoulder top<\/text><text x=\"257\" y=\"116\" fill=\"#914209\" font-size=\"16\">flush with rubber<\/text><path d=\"M171 130H231L245 116\" fill=\"none\" stroke=\"#c2570b\" stroke-width=\"2\"><\/path><path d=\"M140 18v58m-9-12 9 12 9-12\" fill=\"none\" stroke=\"#182126\" stroke-width=\"3\"><\/path><text x=\"170\" y=\"49\" fill=\"#182126\" font-size=\"14\">Load<\/text><\/svg><p>The support shoulder is seated in the rubber, with its top flush with the rubber surface. This limits sinking. Recesses in the shoulder ring allow the tool to engage for easy stud removal.<\/p><\/figure><\/div><p class=\"small\" style=\"margin-top:14px\">Schematic diagrams, not to scale. Correct model selection and installation depth are essential.<\/p><div class=\"benefits\"><div><h3>Tungsten carbide tip<\/h3><p>The wear-resistant working tip helps provide grip on ice and packed snow.<\/p><\/div><div><h3>Secure anchoring<\/h3><p>The coarse thread anchors into suitable rubber. Hardened, zinc-plated steel gives the body strength and corrosion protection.<\/p><\/div><div><h3>Accessible for removal<\/h3><p>Recesses in the SS shoulder ring allow the tool to engage even when the hexagonal head is worn.<\/p><\/div><\/div><section class=\"ss-design spaced\" aria-labelledby=\"ss-design-title\"><h3 id=\"ss-design-title\">Take a closer look at the SS design<\/h3><div class=\"ss-design-content\"><figure class=\"ss-construction\">\r\n  <div class=\"ss-construction-panel\">\r\n    <img src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/ss-construction.png\" alt=\"Close-up of an iGrip SS stud showing the carbide tip, hexagonal head, support shoulder, shoulder-ring recesses and coarse thread\" width=\"786\" height=\"1461\" loading=\"lazy\" decoding=\"async\">\r\n    <p style=\"left:23.969%;top:4.743%;width:69.466%\">Tungsten carbide core through the full height of the hexagonal head<\/p>\r\n    <p style=\"left:27.557%;top:15.688%;width:68.321%\">Hexagonal profile for added grip<\/p>\r\n    <p style=\"left:41.985%;top:27.864%;width:54.580%\">Wide support shoulder limits excessive penetration<\/p>\r\n    <p style=\"left:28.511%;top:46.160%;width:67.557%\">Special shoulder-ring recesses for easy removal<\/p>\r\n    <p style=\"left:31.145%;top:64.846%;width:63.359%\">Induction-hardened, zinc-plated steel<\/p>\r\n    <p style=\"left:31.145%;top:83.039%;width:62.595%\">Special coarse thread<\/p>\r\n  <\/div>\r\n  <figcaption>iGrip SS stud construction.<\/figcaption>\r\n<\/figure>\r\n<\/div><\/section><\/div><\/section>\r\n\r\n<section class=\"section soft\" id=\"quantity\"><div class=\"wrap\"><p class=\"eyebrow\">03 \/ Calculate your quantity<\/p><h2>Calculate tire stud quantity.<br>Plan each tire separately.<\/h2><p class=\"intro\">Studs per tire = tread blocks to be studded \u00d7 studs per block. Count blocks on both sides of the tire. For more grip, use more studs where block dimensions allow. When using fewer studs, distribute them evenly around the tire.<\/p><div class=\"split spaced\"><ol class=\"numbered\"><li><b>Mark the first block.<\/b>Work around the entire tire and count each physical block only once.<\/li><li><b>Add both sides.<\/b>If there are 17 blocks on one side and 17 on the other, you have 34 blocks in total.<\/li><li><b>Choose your layout.<\/b>We show examples with 2\u20134 studs per agricultural tread block. Adjust the quantity to the block size, tire and job.<\/li><\/ol><div><h3>One simple formula<\/h3><p class=\"spaced\"><strong>Blocks \u00d7 studs per block \u00d7 tires = total quantity<\/strong><\/p><p class=\"small\">Example: 34 blocks \u00d7 4 studs = <strong>136 studs per tire<\/strong>. For two identical tires, the total is 272.<\/p><div class=\"notice\"><strong>Calculate front and rear tires separately.<\/strong>The figures below are an example. Replace them with your own tire details.<\/div><\/div><\/div><div class=\"calc\" id=\"quantity-calc\"><div class=\"calc-row\"><div><h3>Front tires<\/h3><p class=\"small\">Group of identical tires<\/p><\/div><div><label for=\"front-blocks\">Total blocks \/ tire<\/label><input id=\"front-blocks\" type=\"number\" min=\"1\" max=\"1000\" step=\"1\" value=\"28\" inputmode=\"numeric\"><\/div><div><label for=\"front-per\">Studs \/ block<\/label><select id=\"front-per\"><option value=\"2\">2<\/option><option value=\"3\" selected>3<\/option><option value=\"4\">4<\/option><\/select><\/div><div><label for=\"front-wheels\">Tires<\/label><select id=\"front-wheels\"><option value=\"0\">0<\/option><option value=\"1\">1<\/option><option value=\"2\" selected>2<\/option><option value=\"4\">4<\/option><\/select><\/div><div class=\"calc-result\" aria-live=\"polite\"><strong id=\"front-result\">84<\/strong><span>studs \/ tire<\/span><\/div><\/div><div class=\"calc-row\"><div><h3>Rear tires<\/h3><p class=\"small\">Group of identical tires<\/p><\/div><div><label for=\"rear-blocks\">Total blocks \/ tire<\/label><input id=\"rear-blocks\" type=\"number\" min=\"1\" max=\"1000\" step=\"1\" value=\"34\" inputmode=\"numeric\"><\/div><div><label for=\"rear-per\">Studs \/ block<\/label><select id=\"rear-per\"><option value=\"2\">2<\/option><option value=\"3\">3<\/option><option value=\"4\" selected>4<\/option><\/select><\/div><div><label for=\"rear-wheels\">Tires<\/label><select id=\"rear-wheels\"><option value=\"0\">0<\/option><option value=\"1\">1<\/option><option value=\"2\" selected>2<\/option><option value=\"4\">4<\/option><\/select><\/div><div class=\"calc-result\" aria-live=\"polite\"><strong id=\"rear-result\">136<\/strong><span>studs \/ tire<\/span><\/div><\/div><p class=\"calc-message\" id=\"calc-error\" hidden><\/p><div class=\"calc-total\"><div><span>Total planned quantity<\/span><p id=\"calc-explanation\">Front: 168 \u00b7 Rear: 272<\/p><\/div><div><strong id=\"total\" aria-live=\"polite\">440<\/strong> <span>studs<\/span><\/div><button type=\"button\" class=\"btn\" id=\"copy-plan\">Copy calculation<\/button><\/div><\/div><p class=\"small\" id=\"copy-status\" aria-live=\"polite\" style=\"margin-top:12px\"><\/p><div class=\"examples\"><div class=\"example\"><strong>68<\/strong><span>34 blocks \u00d7 2 studs<\/span><\/div><div class=\"example\"><strong>102<\/strong><span>34 blocks \u00d7 3 studs<\/span><\/div><div class=\"example\"><strong>136<\/strong><span>34 blocks \u00d7 4 studs<\/span><\/div><\/div><p class=\"small spaced\">These are arithmetic examples for a single tire with 34 blocks. They are not universal categories for \u201clight\u201d, \u201cstandard\u201d or \u201cmaximum\u201d grip. The range of 100\u2013150 studs per tire is a rough guide; your own calculation determines the order quantity.<\/p><details class=\"spaced\"><summary>When the number of studs varies between blocks<\/summary><div><p>Add the groups separately. For example, 17 blocks with 2 studs and 17 blocks with 4: (17 \u00d7 2) + (17 \u00d7 4) = <strong>102 studs per tire<\/strong>. Do not count small winter tread blocks as if they were large agricultural lugs: count the actual planned installation locations.<\/p><p>If tires on the same axle differ, or you use dual wheels, calculate each different tire separately and add the results. Each calculator group must have the same block count and stud layout.<\/p><\/div><\/details><\/div><\/section>\r\n\r\n<section class=\"section\" id=\"layout\"><div class=\"wrap\"><p class=\"eyebrow\">04 \/ Plan the installation points<\/p><h2>Where to place tire studs.<br>Keep the pattern even.<\/h2><p class=\"intro\">Start with the outer tread blocks on both sides of the tire, then distribute the remaining studs across the center of the tread. Balance both sides and repeat the pattern evenly around the tire. Stagger positions in neighboring blocks, leaving enough sound rubber around each stud.<\/p><div class=\"split spaced\"><figure class=\"diagram\"><svg viewbox=\"0 0 520 375\" role=\"img\" aria-label=\"Stud positions staggered around the tire in the main tread blocks; grooves and sidewalls are unsuitable\"><rect x=\"95\" y=\"20\" width=\"330\" height=\"335\" rx=\"45\" fill=\"#1c252b\"><\/rect><path d=\"M250 35V340\" stroke=\"#7c8b95\" stroke-dasharray=\"5 7\"><\/path><path d=\"M115 42l114 38v31l-114-38Z M405 65l-125 38v31l125-38Z\" fill=\"#53606a\"><\/path><path d=\"M115 115l114 38v31l-114-38Z M405 138l-125 38v31l125-38Z\" fill=\"#53606a\"><\/path><path d=\"M115 188l114 38v31l-114-38Z M405 211l-125 38v31l125-38Z\" fill=\"#53606a\"><\/path><path d=\"M115 261l114 38v31l-114-38Z M405 284l-125 38v31l125-38Z\" fill=\"#53606a\"><\/path><circle cx=\"155\" cy=\"68\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"204\" cy=\"86\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"320\" cy=\"104\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"364\" cy=\"87\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"143\" cy=\"137\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"198\" cy=\"157\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"308\" cy=\"181\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"364\" cy=\"163\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"156\" cy=\"218\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"211\" cy=\"236\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"322\" cy=\"249\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"378\" cy=\"231\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"143\" cy=\"282\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"198\" cy=\"304\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"308\" cy=\"327\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><circle cx=\"365\" cy=\"310\" r=\"6\" fill=\"#ff8a2b\" stroke=\"#ffddbf\" stroke-width=\"2\"><\/circle><path d=\"M55 203l16 16m0-16-16 16m174-90 16 16m0-16-16 16\" stroke=\"#e57867\" stroke-width=\"5\"><\/path><text x=\"14\" y=\"185\" fill=\"#8c3a2d\" font-size=\"13\">Not here<\/text><text x=\"265\" y=\"39\" fill=\"#c4d0d5\" font-size=\"12\">Working tread<\/text><\/svg><figcaption>Schematic top view of agricultural tread. Orange dots mark positions within the blocks; crosses mark unsuitable locations. This diagram does not recommend a specific stud quantity.<\/figcaption><\/figure><div><h3>Block shape matters more than tractor size<\/h3><p class=\"spaced\">An industrial tire on a small tractor and an agricultural tire on a large tractor may have completely different tread patterns. Adapt the layout to the actual rubber shape.<\/p><ul><li>Leave enough sound rubber around the thread and shoulder.<\/li><li>Balance the left and right sides.<\/li><li>Repeat the pattern evenly around the entire tire.<\/li><li>Mark the positions before driving in any studs.<\/li><\/ul><p class=\"small\">We do not specify one spacing in millimetres for every tire. If the block is narrow or its shape is unclear, send us a photo with measurements.<\/p><\/div><\/div><div class=\"patterns\"><figure><h3>Agricultural tires<\/h3><img src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/agricultural-tires.jpg\" alt=\"Two iGrip stud layout examples on angled agricultural tire lugs\" loading=\"lazy\" width=\"786\" height=\"636\" decoding=\"async\"><figcaption>Orange dots show staggered positions. Adjust the number of studs to the block size.<\/figcaption><\/figure><figure><h3>Winter and industrial tires<\/h3><img src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/winter-industrial-tires.jpg\" alt=\"iGrip layout on a winter tire on the left and an industrial tire on the right\" loading=\"lazy\" width=\"786\" height=\"669\" decoding=\"async\"><figcaption>Winter tire on the left; industrial tire on the right. Different blocks need different stud positions.<\/figcaption><\/figure><\/div><div class=\"goodbad\"><div><h3>\u2713 Suitable locations<\/h3><ul><li>Main working tread blocks.<\/li><li>Sound rubber with sufficient height and width.<\/li><li>A balanced, repeating pattern.<\/li><\/ul><\/div><div><h3>\u00d7 Unsuitable locations<\/h3><ul><li>Tire sidewalls or the bottom of grooves.<\/li><li>Torn, cracked or overly worn blocks.<\/li><li>Positions too close to a block edge, with insufficient surrounding rubber.<\/li><\/ul><\/div><\/div><\/div><\/section>\r\n\r\n<section class=\"section soft\" id=\"installation\"><div class=\"wrap\"><p class=\"eyebrow\">05 \/ Install step by step<\/p><h2>How to install iGrip SS studs.<br>Start with one stud.<\/h2><p class=\"intro\">Every pack includes a dedicated iGrip installation tool; replacements are also available separately. Prepare your chosen studs, the matching tool, a drill\/driver, a tread depth gauge and a marker. Keep the diagram for your exact SS model at hand.<\/p><div class=\"install-layout\"><ol class=\"steps\"><li><h3>Measure<\/h3><p>Clean the tread. Measure block height at several points and record the lowest reading. Check front and rear tires separately.<\/p><\/li><li><h3>Choose your SS model<\/h3><p>Check that tread depth \u2265 penetration depth + 2 mm. You also need sufficient block width and sound rubber. Use the installation instructions for your exact model.<\/p><\/li><li><h3>Plan the whole tire<\/h3><p>Count the blocks and mark the positions. Start with the outer tread blocks on both sides, then distribute the remaining studs across the center. Stagger the pattern and repeat it evenly around the entire tire.<\/p><\/li><li><h3>Prepare the tool and installation point<\/h3><p>Park the tractor safely, switch off the engine and secure it against movement. Fit the correct iGrip tool for your SS model to the drill\/driver. For SS-40 and SS-50, follow the additional preparation below.<\/p><\/li><li><h3>Drive in perpendicular to the block<\/h3><p>Start with one stud. Hold the tool at 90\u00b0 to the tread block surface at the installation point and drive it in with controlled rotation. Keep the stud straight.<\/p><\/li><li><h3>Stop at the correct position<\/h3><p>Seat the support shoulder in the rubber until its top is flush with the rubber surface. The shoulder must not protrude. Stop at this position and check the working tip protrusion specified for your model.<\/p><\/li><li><h3>Check and complete<\/h3><p>Check protrusion against the model-specific diagram. Inspect the rubber, alignment and anchoring. If the first stud is correctly installed, complete the pattern and inspect the whole tire.<\/p><\/li><\/ol><aside class=\"install-aside\"><figure class=\"diagram\"><svg viewbox=\"0 0 430 330\" role=\"img\" aria-label=\"Hold the tool perpendicular to the tread surface, at 90 degrees\"><rect x=\"30\" y=\"165\" width=\"370\" height=\"145\" fill=\"#2b373e\"><\/rect><g transform=\"translate(184,145)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><rect x=\"-30\" y=\"21\" width=\"60\" height=\"8\" rx=\"1\" fill=\"#f57b20\" stroke=\"#71350a\" stroke-width=\"2\"><\/rect><path d=\"M-23 22v5m46-5v5\" stroke=\"#71350a\" stroke-width=\"3\"><\/path><\/g><path d=\"M154 20H214V78H211V172H203V86H165V172H157V78H154Z\" fill=\"#53626c\"><\/path><path d=\"M184 78V295\" stroke=\"#ff9e54\" stroke-dasharray=\"4 5\"><\/path><path d=\"M221 166v-38h-37\" fill=\"none\" stroke=\"#ee781f\" stroke-width=\"3\"><\/path><text x=\"240\" y=\"134\" font-size=\"25\" font-weight=\"700\" fill=\"#ae4f09\">90\u00b0<\/text><text x=\"231\" y=\"204\" font-size=\"14\" fill=\"white\">Shoulder top<\/text><text x=\"231\" y=\"225\" font-size=\"14\" fill=\"white\">flush with rubber<\/text><path d=\"M215 165l16 25\" stroke=\"#ee781f\" stroke-width=\"2\"><\/path><\/svg><figcaption>Use the block surface at the installation point to judge the angle. This is a schematic; check protrusion for your specific model.<\/figcaption><\/figure><div class=\"checklist\"><h3>Check after the first stud<\/h3><label><input type=\"checkbox\">The stud is straight.<\/label><label><input type=\"checkbox\">The shoulder top is flush with the rubber surface.<\/label><label><input type=\"checkbox\">Tip protrusion matches the model specification.<\/label><label><input type=\"checkbox\">The rubber around the stud is undamaged.<\/label><label><input type=\"checkbox\">The stud is firmly anchored.<\/label><\/div><\/aside><\/div><figure class=\"diagram\"><img src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/correct-installation.jpg\" alt=\"SS installation comparison: shoulder top flush with the rubber on the left, shoulder protruding above the rubber on the right\" width=\"723\" height=\"330\" loading=\"lazy\" style=\"width:100%;max-width:640px;margin:auto\" decoding=\"async\"><figcaption style=\"text-align:center\">\u2713 Shoulder top flush with the rubber surface. \u00d7 Shoulder protruding above the rubber.<\/figcaption><\/figure><div class=\"model-guide\"><h3>SS installation dimensions and preparation<\/h3><p class=\"small\" style=\"margin-top:10px;margin-bottom:20px\">Minimum tread depth = penetration depth + 2 mm. Overall length, penetration depth and protrusion are shown separately below.<\/p><label for=\"install-model\">Model to install<\/label><select id=\"install-model\"><option value=\"15\">SS-15<\/option><option value=\"18\">SS-18<\/option><option value=\"25\">SS-25<\/option><option value=\"30\" selected>SS-30<\/option><option value=\"40\">SS-40<\/option><option value=\"50\">SS-50<\/option><\/select><div class=\"tech-specs\" id=\"tech-specs\" aria-live=\"polite\"><div><strong>32 mm<\/strong><span>overall stud length<\/span><\/div><div><strong>28 mm<\/strong><span>penetration into the tire<\/span><\/div><div><strong>4 mm<\/strong><span>protrusion above the rubber<\/span><\/div><div><strong>\u226530 mm<\/strong><span>tread depth: 28 + 2 mm<\/span><\/div><\/div><p class=\"notice\" id=\"prep-note\">Install SS-30 directly with the correct iGrip tool. Seat the support shoulder in the rubber until its top is flush with the rubber surface.<\/p><img id=\"install-image\" src=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/localized\/en\/ss-30-installation.svg?v=2.0.3\" alt=\"iGrip SS-30 installation and removal diagram: 28 mm into the tire, 4 mm above the rubber\" loading=\"lazy\" data-no-lazy=\"1\" width=\"1815\" height=\"575\" decoding=\"async\"><a id=\"install-link\" href=\"https:\/\/igripstud.eu\/wp-content\/plugins\/igrip-guide-en\/assets\/localized\/en\/ss-30-installation.svg?v=2.0.3\" target=\"_blank\" rel=\"noopener\">Open our SS-30 installation diagram \u2197<\/a><\/div><div class=\"notice\"><strong>SS-40 and SS-50: additional preparation.<\/strong>For SS-40, prepare a hole 6 mm in diameter and 30 mm deep. For SS-50, the model-specific diagram calls for a hole 6 mm in diameter and 40 mm deep, plus a drop of adhesive. Before installing SS-50, confirm the adhesive type and curing time <a href=\"#help\">with us<\/a>.<\/div><\/div><\/section>\r\n\r\n<section class=\"section video-section\" id=\"video\"><div class=\"wrap\"><p class=\"eyebrow orange\">See the full process<\/p><h2>How to install SS-30 tire studs<\/h2><p class=\"intro\">Watch tool positioning and the installation process in our video guide. This video covers SS-30.<\/p><div class=\"notice video-note\"><strong>SS-30: 28 mm into the tire, 4 mm above the rubber.<\/strong>Overall stud length: 32 mm. Minimum tread depth: <strong>28 + 2 = 30 mm.<\/strong><\/div><div class=\"video-frame\" id=\"video-frame\"><button type=\"button\" class=\"video-cover\" id=\"play-video\" aria-label=\"Play the iGrip SS-30 installation video\"><img src=\"https:\/\/i.ytimg.com\/vi\/D1SbxHMJH1Y\/hqdefault.jpg\" alt=\"iGrip SS-30 installation video preview\" width=\"480\" height=\"360\" loading=\"lazy\" decoding=\"async\"><span class=\"play\" aria-hidden=\"true\">\u25b6<\/span><span class=\"video-title\">iGrip SS-30 \u00b7 Installation instructions<\/span><\/button><\/div><div class=\"video-points\"><div><b>01 \/ Angle<\/b>Keep the tool perpendicular to the block surface.<\/div><div><b>02 \/ Shoulder<\/b>The shoulder top is flush with the rubber surface.<\/div><div><b>03 \/ Protrusion<\/b>SS-30: leave 4 mm above the rubber.<\/div><\/div><p class=\"small spaced\">Clicking the video loads the YouTube player. If it does not open, <a href=\"https:\/\/www.youtube.com\/watch?v=D1SbxHMJH1Y\" target=\"_blank\" rel=\"noopener\">watch the instructions on YouTube \u2197<\/a>.<\/p><\/div><\/section>\r\n\r\n<section class=\"section\" id=\"removal\"><div class=\"wrap\"><p class=\"eyebrow\">06 \/ Removal and maintenance<\/p><h2>How to remove and reuse SS studs.<\/h2><p class=\"intro\">The tool-engagement recesses are on the SS shoulder ring. The tool\u2019s teeth fit into these recesses, allowing removal even when the hexagonal head is worn.<\/p><div class=\"removal-steps\"><div><svg viewbox=\"0 0 300 230\" role=\"img\" aria-label=\"Seat the tool\u2019s teeth in the recesses on the SS shoulder ring\"><path d=\"M35 140H265V222H35Z\" fill=\"#ced5d9\"><\/path><g transform=\"translate(150,120)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><rect x=\"-30\" y=\"21\" width=\"60\" height=\"8\" rx=\"1\" fill=\"#f57b20\" stroke=\"#71350a\" stroke-width=\"2\"><\/rect><path d=\"M-23 22v5m46-5v5\" stroke=\"#71350a\" stroke-width=\"3\"><\/path><\/g><path d=\"M120 25H180V85H177V147H169V93H131V147H123V85H120Z\" fill=\"#34444f\"><\/path><path d=\"M90 62v39m-7-9 7 9 7-9\" stroke=\"#be540a\" stroke-width=\"3\" fill=\"none\"><\/path><\/svg><h3>1. Fit the tool<\/h3><p>Clean the recesses in the shoulder ring. Place the iGrip tool for your SS model around the head and fully seat its teeth in the ring\u2019s recesses.<\/p><\/div><div><svg viewbox=\"0 0 300 230\" role=\"img\" aria-label=\"Set the drill\/driver to reverse\"><path d=\"M35 140H265V222H35Z\" fill=\"#ced5d9\"><\/path><g transform=\"translate(150,120)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><rect x=\"-30\" y=\"21\" width=\"60\" height=\"8\" rx=\"1\" fill=\"#f57b20\" stroke=\"#71350a\" stroke-width=\"2\"><\/rect><path d=\"M-23 22v5m46-5v5\" stroke=\"#71350a\" stroke-width=\"3\"><\/path><\/g><path d=\"M120 25H180V85H177V147H169V93H131V147H123V85H120Z\" fill=\"#34444f\"><\/path><path d=\"M192 49C246 48 246 95 198 94m8-9-10 9 11 8\" stroke=\"#be540a\" stroke-width=\"4\" fill=\"none\"><\/path><\/svg><h3>2. Select reverse<\/h3><p>Keep the tool aligned with the stud. Turn counterclockwise in a controlled manner without letting the tool slip.<\/p><\/div><div><svg viewbox=\"0 0 300 230\" role=\"img\" aria-label=\"Unscrew the stud from the rubber\"><path d=\"M35 140H265V222H35Z\" fill=\"#ced5d9\"><\/path><g transform=\"translate(150,120)\"><path d=\"M-13 8H13V36L10 130 0 150-10 130-13 36Z\" fill=\"#bdc7ce\" stroke=\"#475661\" stroke-width=\"2\"><\/path><path d=\"M-18 43l36-12m-35 29l34-12m-33 29l32-12m-30 29l28-12m-25 29l23-12m-20 26l17-10\" stroke=\"#475661\" stroke-width=\"5\"><\/path><rect x=\"-17\" y=\"0\" width=\"34\" height=\"25\" rx=\"2\" fill=\"#aebcc5\" stroke=\"#475661\" stroke-width=\"2\"><\/rect><rect x=\"-6\" y=\"-8\" width=\"12\" height=\"10\" fill=\"#293339\"><\/rect><rect x=\"-30\" y=\"21\" width=\"60\" height=\"8\" rx=\"1\" fill=\"#f57b20\" stroke=\"#71350a\" stroke-width=\"2\"><\/rect><path d=\"M-23 22v5m46-5v5\" stroke=\"#71350a\" stroke-width=\"3\"><\/path><\/g><path d=\"M120 25H180V85H177V147H169V93H131V147H123V85H120Z\" fill=\"#34444f\"><\/path><path d=\"M220 108V42m-8 10 8-10 8 10\" stroke=\"#be540a\" stroke-width=\"4\" fill=\"none\"><\/path><\/svg><h3>3. Remove and inspect<\/h3><p>Inspect the thread, body and carbide tip. Reuse only studs in suitable condition, in a suitable area of sound rubber.<\/p><\/div><\/div><div class=\"notice\"><strong>Regular checks help maintain performance.<\/strong>Inspect stud position, rubber condition and tread wear after the first use and regularly thereafter. If a stud tilts or becomes loose, or the rubber tears, identify the cause before continuing. Adapt speed and manoeuvres to the surface, load and slope.<\/div><\/div><\/section>\r\n\r\n<section class=\"section soft\" id=\"experience\"><div class=\"wrap\"><p class=\"eyebrow\">A tractor owner\u2019s experience<\/p><h2>SS-40 at the rear. SS-30 at the front.<\/h2><figure class=\"quote\"><blockquote>\u201c\u2026they stick like glue to hard ice.\u201d<\/blockquote><p><strong>NSMaple1 \u00b7 Nova Scotia, Canada \u00b7 21 March 2021<\/strong><\/p><p>The user described fitting SS-40 to the rear tires and SS-30 to the front tires. After several months of use, they reported good grip on hard ice.<\/p><p><a href=\"https:\/\/arboristsite.com\/threads\/tractor-tire-studs.337402\/\" id=\"review-link\" target=\"_blank\" rel=\"noopener\">Read the original ArboristSite post, No. 22 \u2197<\/a><\/p><figcaption>An individual experience shared publicly. Results depend on tires, installation and working conditions.<\/figcaption><\/figure><\/div><\/section>\r\n\r\n<section class=\"section\" id=\"faq\"><div class=\"wrap\"><p class=\"eyebrow\">Before you begin<\/p><h2>iGrip SS tire stud questions<\/h2><div class=\"spaced\"><details><summary>Can I install iGrip SS studs myself?<\/summary><div><p>Yes. Every pack includes a dedicated iGrip installation tool. If you lose it, replacement tools are also available to buy separately. Use the tool with a drill\/driver and follow the installation instructions for your model. First assess the tire and try one installation point. SS-40 and SS-50 require additional preparation.<\/p><\/div><\/details><details><summary>How deep does the tread need to be?<\/summary><div><p>Our rule is that tread depth must be at least 2 mm greater than the length entering the tire. SS-15 needs at least 15 mm, SS-18 19 mm, SS-25 25 mm, SS-30 30 mm, SS-40 37 mm and SS-50 47 mm. Measure the remaining tread height at the intended installation point.<\/p><\/div><\/details><details><summary>Does tractor size determine the stud model?<\/summary><div><p>No. We select the model by measured tread depth, block width and rubber condition. The same tread measurement gives the same selection result on a small or a large tractor.<\/p><\/div><\/details><details><summary>Why do we suggest SS-40 and SS-30 for 40 mm of tread?<\/summary><div><p>SS-40 needs at least 37 mm of tread and SS-30 needs 30 mm. These requirements are 3 mm and 10 mm below the measured 40 mm, so both models qualify. The minimum requirements for SS-25, SS-18 and SS-15 are more than 10 mm below the measurement, so we do not suggest them. SS-50 needs at least 47 mm, so there is not enough tread for it.<\/p><\/div><\/details><details><summary>How many studs do I need per tire?<\/summary><div><p>Count all the tread blocks you intend to stud and multiply by the chosen number of studs per block. For example, 34 blocks with 4 studs each require 136 studs per tire. The 100\u2013150 stud range is a rough guide and does not apply to every tire. For more grip, use more studs. If you use fewer studs, distribute them evenly around the tire for consistent grip. We recommend studding the outer tread blocks on both sides first, then distributing the remaining studs evenly across the center of the tread.<\/p><\/div><\/details><details><summary>Do I need to stud all four tires?<\/summary><div><p>Front and rear tire grip supports different tasks: steering, traction and braking. Choose which tires to stud according to the tractor\u2019s drivetrain, use and working conditions. If you are unsure, send us the tire details for both axles.<\/p><\/div><\/details><details><summary>Can I fit studs to used tires?<\/summary><div><p>Yes, if enough tread remains and the rubber at the installation points is sound. Cracked, torn or badly damaged blocks are unsuitable. Check actual measurements, not catalogue specifications for a new tire.<\/p><\/div><\/details><details><summary>Can a stud damage the tire?<\/summary><div><p>A stud that is too long, poorly positioned or incorrectly installed can damage the tire. The SS support shoulder limits sinking, but the correct model and installation remain essential. Follow the +2 mm selection rule and the model-specific installation dimensions.<\/p><\/div><\/details><details><summary>Do all SS models require drilling?<\/summary><div><p>No. SS-15, SS-18, SS-25 and SS-30 are installed directly. SS-40 requires drilling. The separate SS-50 diagram specifies drilling and a drop of adhesive. Check drilling dimensions, adhesive type and preparation in the instructions for your model.<\/p><\/div><\/details><details><summary>Can the support shoulder protrude above the rubber?<\/summary><div><p>No. The shoulder must be seated in the rubber with its top flush with the rubber surface. A protruding shoulder means the stud has not been driven in far enough. Only the working part specified for that model should remain above the rubber.<\/p><\/div><\/details><details><summary>Can SS studs be removed and reused?<\/summary><div><p>Yes. Use the correct iGrip tool with the drill\/driver set to reverse. Recesses in the shoulder ring help the tool engage even when the hexagonal head is worn. Check the stud and tire rubber before reuse; do not reinstall damaged studs.<\/p><\/div><\/details><details><summary>Do these dimensions apply to R and HD versions?<\/summary><div><p>This guide covers SS-15, SS-18, SS-25, SS-30, SS-40 and SS-50 without R or HD suffixes. For any other version, use its own dimensions, installation tool and instructions.<\/p><\/div><\/details><\/div><\/div><\/section>\r\n<section class=\"contact\" id=\"help\"><div class=\"wrap split\"><div><p class=\"eyebrow\">We can help you choose<\/p><h2>Send us your tire details. We will help you find the right fit.<\/h2><p>Tire make, model and size \u00b7 tread depth \u00b7 block count \u00b7 tractor model \u00b7 intended use \u00b7 photos of the tire and tread blocks.<\/p><\/div><div><h3>iGrip Europe<\/h3><p><a href=\"mailto:info@igripstud.eu?subject=iGrip%20SS%20stud%20selection\">info@igripstud.eu<\/a><br><a href=\"tel:+37052555650\">+370 525 55650<\/a><\/p><div class=\"actions\"><a class=\"btn dark\" id=\"contact-plan\" href=\"mailto:info@igripstud.eu?subject=iGrip%20SS%20stud%20selection\">Prepare an enquiry \u2192<\/a><a class=\"btn outline\" href=\"https:\/\/igripstud.eu\/en\/category\/farming\/\">Browse studs \u2197<\/a><\/div><p class=\"small\">Your email app will open with the enquiry ready to edit and send. You can add tire photos alongside the calculator results.<\/p><\/div><\/div><\/section>\r\n<section class=\"related-guides wrap\" aria-labelledby=\"related-guides-title\"><h2 id=\"related-guides-title\">Related iGrip guides<\/h2><p><a href=\"https:\/\/igripstud.eu\/en\/category\/farming\/\" data-guide-category=\"\">Tractor tire studs \u2197<\/a><\/p><ul><li><a href=\"https:\/\/igripstud.eu\/en\/snowmobile-stud-installation-guide\/\">Snowmobile stud selection and installation \u2192<\/a><\/li><li><a href=\"https:\/\/igripstud.eu\/en\/shoe-stud-installation-guide\/\">Shoe and boot stud selection and installation \u2192<\/a><\/li><\/ul><\/section><\/div><a href=\"#top\" class=\"backtop\" aria-label=\"Back to the top of the page\">\u2191<\/a>\r\n<script type=\"application\/json\" id=\"guide-i18n\">{\r\n\"enterDepth\":\"Enter your tread depth.\",\"example\":\"We consider all six SS models. For example, for 40 mm of tread, we suggest SS-40 or SS-30.\",\"checkMeasurement\":\"Check your measurement.\",\"validDepth\":\"Enter a tread depth greater than 0 and no more than 200 mm.\",\"basedOn\":\"Based on {depth} mm tread depth\",\"or\":\"or\",\"modelMinimum\":\"SS-{model}: minimum tread depth {minimum} mm, difference {difference} mm\",\"depthCriteria\":\"Both depth criteria are met: there is room for the penetrating part plus a 2 mm allowance, and the difference from the minimum requirement is no more than 10 mm. Also check block width, rubber condition and the installation diagram.\",\"viewModel\":\"View SS-{model} \u2197\",\"tooShallow\":\"Not enough tread for the models in this guide.\",\"individual\":\"This measurement needs an individual model recommendation.\",\"minimum\":\"SS-15 needs at least 15 mm of tread. None of these six models meets the minimum depth requirement.\",\"tooDeep\":\"The minimum tread requirements of all models in this guide are more than 10 mm below your measurement. Send us your tire dimensions and a photo so we can help you choose.\",\"ask\":\"Ask us to help you choose \u2192\",\"blocksError\":\"Enter a whole number of blocks from 1 to 1000 for each selected tire group.\",\"checkEntries\":\"Check the highlighted entries.\",\"totals\":\"Front: {front} \u00b7 Rear: {rear}\",\"planTitle\":\"iGrip SS stud quantity plan\",\"front\":\"Front\",\"rear\":\"Rear\",\"notStudded\":\"not being studded\",\"groupPlan\":\"{blocks} blocks \u00d7 {each} studs \u00d7 {wheels} tires = {total} studs ({perTire} per tire)\",\"planTotal\":\"Total: {total} studs.\",\"planNote\":\"Quantity is based on the chosen pattern; check that the layout is suitable for the tire.\",\"copied\":\"Calculation copied. You can paste it into your enquiry.\",\"copyFailed\":\"The browser did not allow copying. Select \u201cPrepare an enquiry\u201d to include the calculation in an email.\",\"mailSubject\":\"iGrip SS stud selection\",\"mailBody\":\"Hello, please help me choose iGrip SS studs.\\n\\nTractor model: \\nTire make \/ model \/ size: \\nIntended use: \\nMinimum measured tread depth: {depth}\\n\\n{plan}\\n\\nI have attached photos of the tire and tread.\",\"overall\":\"overall stud length\",\"penetration\":\"penetration into the tire\",\"protrusion\":\"protrusion above the rubber\",\"tread\":\"tread depth: {depth} + 2 mm\",\"imageAlt\":\"iGrip SS-{model} installation diagram: {depth} mm into the rubber, {tip} mm above the rubber\",\"openPage\":\"Open our installation guide, page {page} (SS-{model}) \u2197\",\"openDiagram\":\"Open our SS-{model} installation diagram \u2197\",\"direct\":\"SS-{model}: drive in with the correct iGrip tool. Seat the shoulder in the rubber with its top flush with the rubber surface. This model does not require pre-drilling.\",\"prep40\":\"SS-40: before installation, prepare a hole 6 mm in diameter and 30 mm deep. The shoulder top must be flush with the rubber surface, with 7 mm of the working part above the rubber.\",\"prep50\":\"SS-50: the shoulder top must be flush with the rubber surface. Use the separate installation diagram. Prepare a hole 6 mm in diameter and 40 mm deep, and add a drop of adhesive. Confirm the adhesive type and curing time with us before installation.\",\"videoTitle\":\"iGrip SS-30 installation instructions\"\r\n}\r\n<\/script><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"class_list":["post-927","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>iGrip SS Tire Studs for Farming | Size &amp; Installation Guide<\/title>\n<meta name=\"description\" content=\"Choose iGrip SS screw-in tire studs by tread depth. 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