{"id":1129,"date":"2026-09-07T02:37:36","date_gmt":"2026-09-07T02:37:36","guid":{"rendered":"https:\/\/www.chinakingtyre.com\/motorcycle-racing-tire-slicks-engineering-the-k00-slick-for-endurance-racing\/"},"modified":"2026-09-07T02:56:33","modified_gmt":"2026-09-07T02:56:33","slug":"motorcycle-racing-tire-slicks-engineering-the-k00-slick-for-endurance-racing","status":"publish","type":"post","link":"https:\/\/www.chinakingtyre.com\/ja\/motorcycle-racing-tire-slicks-engineering-the-k00-slick-for-endurance-racing\/","title":{"rendered":"Motorcycle Racing Tire Slicks: Engineering the K00 Slick for Endurance Racing"},"content":{"rendered":"<p><strong>Short answer:<\/strong> A racing slick is a treadless motorcycle tire built exclusively for closed-circuit use, where the absence of grooves maximizes the rubber contact patch and therefore dry grip. The KingTyre K00 is a radial-construction racing slick engineered specifically for endurance racing \u2014 designed to deliver competitive lap times across a 24-hour stint while holding casing integrity, compound temperature, and predictable wear behavior. Five consecutive Le Mans 24H campaigns (2022\u20132026) and over 1TB of telemetry data back every spec on the data sheet.<\/p>\n<blockquote>\n<p><strong>Quick orientation for B2B buyers:<\/strong> Skip to the <a href=\"#compound-system\">compound table<\/a>\u305d\u306e <a href=\"#endurance-field-data\">endurance field data<\/a> section, or the <a href=\"#b2b-sizing-matrix-for-racing-teams-and-distributors\">B2B sizing matrix<\/a> below.<\/p>\n<\/blockquote>\n<hr>\n<h2 id=\"what-a-motorcycle-racing-slick-actually-is\">What a motorcycle racing slick actually is<\/h2>\n<p>A motorcycle racing slick is a tire with <strong>no tread pattern<\/strong> across the contact patch \u2014 a continuous band of vulcanized rubber, usually silica- and carbon-black-rich compound, bonded to a radial or bias-ply casing. The absence of grooves means the entire footprint is in contact with the track at any given moment. On a warm, dry circuit, that is pure mechanical advantage: more rubber, more grip, more cornering force.<\/p>\n<p>There is a strict regulatory boundary around this advantage. <strong>Slicks are not street legal in any major motorcycle market.<\/strong> ECE R75 (Europe, UK, most of Asia and Latin America), FMVSS 119 \/ DOT (United States and Canada), Japan&#8217;s JIS framework, Australia&#8217;s ADR, and Brazil&#8217;s INMETRO regime all require a tread pattern across the contact patch. A tire with zero grooves fails type approval, fails safety inspection, and voids insurance on public roads. For the full country-by-country breakdown, see <a href=\"\/ja\/are-slick-motorcycle-tires-street-legal\/\">Article 1: Are Slick Motorcycle Tires Street Legal?<\/a>.<\/p>\n<p>The same lack of grooves that makes slicks illegal on the road is exactly what makes them valuable on track:<\/p>\n<ul>\n<li><strong>Maximum contact patch.<\/strong> No grooves interrupt the rubber-to-pavement interface, so the entire footprint contributes grip.<\/li>\n<li><strong>Predictable wear pattern.<\/strong> Without tread, wear is uniform across the contact patch, which makes lap-time-versus-lap-count forecasting accurate.<\/li>\n<li><strong>Compound-controlled grip.<\/strong> Because mechanical tread features are absent, grip is delivered entirely by the compound&#8217;s viscoelastic properties \u2014 temperature-sensitive by design.<\/li>\n<li><strong>Trailer-only logistics.<\/strong> Slicks cold-cycle slowly and have almost no grip below ~50\u00b0C. Every serious amateur or professional team transports bikes on trailers or swaps to warmers in the pit lane.<\/li>\n<\/ul>\n<p>For B2B buyers \u2014 racing tire distributors, importers supplying series organizers, club racing federations \u2014 the slick is a <strong>specialized SKU<\/strong>, not a general-purpose tire. It belongs in a catalog next to ECE R75 street tires, semi-slicks (K06), and rain tires (K01), but it should never be sold or marketed as a road product.<\/p>\n<hr>\n<h2 id=\"what-the-k00-is-designed-to-do\">What the K00 is designed to do<\/h2>\n<p>The K00 is KingTyre&#8217;s radial-construction racing slick, first released for track use in 2019 and continuously refined through the Kingtyre Fullgas Racing Team&#8217;s endurance program. Where most Chinese motorcycle tire manufacturers focus on commuter and mid-tier sport products, the K00 is a deliberate bet on the highest-margin, highest-prestige segment of the racing tire market: <strong>endurance racing, where tires must survive 16+ pit stops over 24 hours without a single casing failure.<\/strong><\/p>\n<p>The design brief was specific:<\/p>\n<ol>\n<li><strong>24-hour stint durability.<\/strong> A single set of tires must remain serviceable across multi-hour stints in changing track and weather conditions, including the option of running slicks through damp sections.<\/li>\n<li><strong>Compound flexibility.<\/strong> One carcass must accept four distinct rubber compounds \u2014 Super Soft, Soft, Medium, Hard \u2014 without changing profile, without changing grip windows, and without changing the rider&#8217;s reference points.<\/li>\n<li><strong>Radial stability.<\/strong> Sidewall stiffness must be tuned to a radial (not bias) architecture, so the tire deforms predictably under braking, cornering, and acceleration loads above 50\u00b0 lean.<\/li>\n<li><strong>Pit-stop economics.<\/strong> Tires must be consistent enough that a fresh set and a 12-hour-old set behave identically enough for a rider to predict lap time without relearning the bike.<\/li>\n<\/ol>\n<p>This brief is unusual. Most racing slicks on the market are designed for sprint races \u2014 8 to 20 minutes per stint, one or two compounds per series, single-event performance optimization. The endurance brief forces the K00 to balance compound longevity against outright grip, casing integrity against sidewall compliance, and rider feel against telemetry repeatability. That balance is what the Kingtyre Fullgas Racing Team has been testing in public at Le Mans for five consecutive years.<\/p>\n<h3 id=\"why-radial-not-bias-ply\">Why radial, not bias-ply<\/h3>\n<p>The motorcycle tire industry still ships most race tires in bias-ply construction. Bias-ply casings \u2014 layers of cord laid diagonally across the bead \u2014 are well understood, easy to manufacture, and forgiving on cold starts.<\/p>\n<p>Radial construction, in which the carcass cords run perpendicular to the direction of travel with a separate belt package wrapping the crown, behaves differently:<\/p>\n<ul>\n<li><strong>Lower rolling resistance<\/strong> at constant speed, which reduces heat buildup during long stints.<\/li>\n<li><strong>Larger, more stable contact patch<\/strong> under cornering load, which means more grip and more consistent feel as the tire wears.<\/li>\n<li><strong>Better heat distribution<\/strong> across the crown, which reduces the hot-spot thermal degradation that ends an endurance stint.<\/li>\n<li><strong>Higher peak grip potential<\/strong>, but also higher sensitivity to under-inflation and cold cycling.<\/li>\n<\/ul>\n<p>For endurance racing, the radial trade-off favors KingTyre&#8217;s positioning. The lower rolling resistance and stable contact patch give the tire more usable life per stint. The heat-distribution benefit delays the catastrophic grip loss that bias-ply endurance tires tend to suffer in the final two hours of a 24-hour race.<\/p>\n<p>The catch is that radial racing tires are more demanding on the rider. They need to be in their working temperature window (80\u2013120\u00b0C on the tread surface for the K00) before the rider commits to race pace, and they need to be kept there. That&#8217;s why the K00 ships with a specific <a href=\"#tire-warming-and-pressure-protocol\">warming protocol<\/a> and is sold alongside consistent, batch-traceable warmers in team kits.<\/p>\n<hr>\n<h2 id=\"compound-system\">Compound system<\/h2>\n<p>The K00 uses a four-compound tread system, with each compound tuned to a defined operating temperature window. The compound is identified by a code prefix on the tire sidewall and product code:<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.6;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Prefix<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">\u30b3\u30f3\u30d1\u30a6\u30f3\u30c9<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Working temperature window<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Typical use case<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>GH<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30b9\u30fc\u30d1\u30fc\u30bd\u30d5\u30c8<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">60\u201395\u00b0C<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Cool ambient, short sprint qualifying, low-grip surfaces<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>G<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30bd\u30d5\u30c8<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">75\u2013110\u00b0C<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Standard sprint race, mild ambient, abrasive tracks<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>GR<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">85\u2013115\u00b0C<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Endurance stint, mid-ambient, smooth tracks<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>GC<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30cf\u30fc\u30c9<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">100\u2013125\u00b0C<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Hot ambient, abrasive tracks, long stints<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The compounds share the same casing profile and the same sidewall markings \u2014 only the tread rubber changes. That consistency is the key engineering choice. A racing team can run Super Soft in qualifying and Medium in the race on the same wheel set, without changing chassis setup, and the rider&#8217;s reference points (lean angle, throttle pickup, brake pressure threshold) stay within a predictable envelope.<\/p>\n<p>For B2B buyers, the four-compound system has a commercial consequence: it lets a distributor stock one carcass and four SKU variants, instead of four full product lines. That simplifies inventory, reduces MOQ pressure, and lets racing teams order the right compound for a given weekend without committing to a second tire program.<\/p>\n<h3 id=\"how-the-compound-behaves-under-24-hour-cycling\">How the compound behaves under 24-hour cycling<\/h3>\n<p>In sprint racing, a tire&#8217;s compound thermal history is short and predictable: warm-up, race, cool-down. In endurance racing, the same tire may see multiple heat cycles, ambient swings from 8\u00b0C at dawn to 32\u00b0C at midday, damp patches in sector two, and a dry line in sector three. The K00&#8217;s compound system is engineered to absorb that cycling without losing the lap-time-versus-stint-age curve that teams plan around.<\/p>\n<p>Telemetry from the 2024 Le Mans 24H, captured across more than 850 laps on K00 and K01 tires, shows three measurable behaviors:<\/p>\n<ul>\n<li><strong>Predictable degradation curve.<\/strong> Tread depth declines linearly from lap 1 to lap ~600, then enters a slower &#8220;long-tail&#8221; phase. Teams can plan pit stops against this curve instead of reacting to grip loss.<\/li>\n<li><strong>Stable hot-pressure window.<\/strong> Across a typical stint, hot pressure rises by 0.1\u20130.2 bar above the target as the tire reaches thermal equilibrium, then holds. This is the window in which the tire does its best work.<\/li>\n<li><strong>Recovery on cooling.<\/strong> When a stint ends and the tire cools, the compound returns to its baseline viscoelastic state without permanent hardening. This is what allows a single set to be reused across multiple stints if wear permits.<\/li>\n<\/ul>\n<p>The same data is fed back into KingTyre&#8217;s street, sport-touring, and adventure product lines. The K06 semi-slick, the K905 sport-touring tire, and the K66 \/ K67 adventure tires all use compound and casing know-how developed on the K00 race program.<\/p>\n<hr>\n<h2 id=\"casing-structure\">Casing structure<\/h2>\n<p>The K00&#8217;s casing is a radial-ply architecture with a steel-belt package across the crown. Three construction choices define how the tire performs:<\/p>\n<h3 id=\"1-radial-carcass\">1. Radial carcass<\/h3>\n<p>The carcass cords run perpendicular to the direction of travel, anchored at the bead. Under cornering load, the carcass deflects sideways rather than buckling, which keeps the contact patch flat and stable across the lean-angle range. KingTyre&#8217;s testing has validated the K00 to lean angles above <strong>50\u00b0<\/strong> without casing distortion \u2014 a threshold that matches or exceeds most bias-ply endurance race tires.<\/p>\n<h3 id=\"2-steel-belt-package\">2. Steel-belt package<\/h3>\n<p>Across the crown, a separate belt package \u2014 typically two layers of steel cord laid at opposing angles \u2014 locks the tread to the carcass. The steel belt does three jobs at once:<\/p>\n<ul>\n<li><strong>Holds the tread flat at high speed<\/strong>, preventing the crown from ballooning or &#8220;squirming&#8221; under acceleration.<\/li>\n<li><strong>Distributes impact loads<\/strong> over a wider area, which matters on curbs and rough pit-lane entries.<\/li>\n<li><strong>Stabilizes the contact patch<\/strong> during rapid direction changes, which is critical in endurance racing where rider fatigue produces less-than-perfect inputs late in a stint.<\/li>\n<\/ul>\n<h3 id=\"3-bead-and-sidewall-reinforcement\">3. Bead and sidewall reinforcement<\/h3>\n<p>The bead area is reinforced to handle repeated mount\/dismount cycles in the pit lane and to maintain bead-seat pressure under hard braking. The lower sidewall is tuned for compliance (so the tire settles into corners), while the upper sidewall is stiffer (so feedback to the rider stays sharp). This split personality is one of the harder things to get right in a radial racing tire \u2014 most radials lean either too soft or too stiff across the full sidewall.<\/p>\n<hr>\n<h2 id=\"tire-warming-and-pressure-protocol\">Tire warming and pressure protocol<\/h2>\n<p>The K00 is sold with a defined warming and pressure protocol, validated across five Le Mans campaigns. The protocol exists because the tire&#8217;s compound and casing are tuned to a specific thermal window \u2014 outside that window, neither grip nor wear behavior is predictable.<\/p>\n<h3 id=\"cold-and-hot-pressures\">Cold and hot pressures<\/h3>\n<p>Recommended pressures vary by size and fitment. The table below covers the most common 17-inch K00 sizes used in endurance racing:<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.6;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">\u30b5\u30a4\u30ba<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Fitment<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Cold pressure<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Hot pressure<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">120\/70 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30d5\u30ed\u30f3\u30c8<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.1 bar (30 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.3 bar (33 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">125\/70 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30d5\u30ed\u30f3\u30c8<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.1 bar (30 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.3 bar (33 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">125\/80 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30d5\u30ed\u30f3\u30c8<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.0 bar (29 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">2.3 bar (33 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">115\/75 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30ea\u30a2<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.5 bar (22 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.8 bar (26 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">160\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30ea\u30a2<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.4 bar (20 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.6 bar (23 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">180\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30ea\u30a2<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.4 bar (20 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.6 bar (23 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">190\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30ea\u30a2<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.4 bar (20 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.6 bar (23 PSI)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">200\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u30ea\u30a2<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.4 bar (20 PSI)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1.6 bar (23 PSI)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Cold pressure is the pressure at ambient track temperature, before warmers. Hot pressure is the pressure measured in pit lane after 2\u20133 laps at race pace. The tire warming guide recommends <strong>80\u201390\u00b0C for 60 minutes<\/strong> before the bike leaves pit lane.<\/p>\n<blockquote>\n<p><strong>Important:<\/strong> Optimal hot pressures on track may vary depending on rider style, rider weight, track surface and temperature, and suspension setup. We recommend checking hot pressures in pit lane directly after a few laps and making small adjustments if necessary.<\/p>\n<\/blockquote>\n<h3 id=\"pre-race-warm-up-cycle\">Pre-race warm-up cycle<\/h3>\n<p>A new K00 typically needs <strong>3 to 8 heat cycles<\/strong> before it reaches peak grip. A heat cycle is one full warm-up to working temperature and cool-down to ambient. Teams running endurance programs often dedicate the first stint of a race weekend to cycling fresh tires through this break-in process before pushing for qualifying lap times.<\/p>\n<hr>\n<h2 id=\"endurance-field-data\">Endurance field data<\/h2>\n<p>The K00&#8217;s data sheet is one thing. The K00&#8217;s performance at the 24 Heures Motos \u2014 the opening round of the FIM Endurance World Championship, held at Le Mans \u2014 is another. Below is a summary of the field data the Kingtyre Fullgas Racing Team has captured across five consecutive campaigns (2022\u20132026).<\/p>\n<h3 id=\"five-year-program-summary\">Five-year program summary<\/h3>\n<table style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.6;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Year<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Result<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Laps completed<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Tires used<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Notable data<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>2022<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">First Chinese tire manufacturer at Le Mans<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u2014<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">K00 + K01 debut<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Compound window validated<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>2023<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Second-year refinement<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u2014<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Updated GR\/GC compound<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Casing endurance validated<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>2024<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Fourth-year milestone<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">850+ laps<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">K00 + K01 in mixed conditions<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">1TB cumulative telemetry across four years<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>2025<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Continued iteration<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">\u2014<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Sidewall and shoulder updates<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Puncture-repair count reduced<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\"><strong>2026<\/strong><\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">Fifth consecutive year<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">742 laps on #116 bike<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">K00 + K01 across wet and dry stints<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">16 pit stops total<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The headline number for B2B buyers is <strong>consistency, not peak lap time<\/strong>. Across the five-year program, the K00 has been run in:<\/p>\n<ul>\n<li>Dry, ambient track temperatures from 12\u00b0C to 38\u00b0C<\/li>\n<li>Wet stints with standing water on parts of the Sarthe circuit<\/li>\n<li>Night sessions (8+ hours) where track temperatures drop sharply<\/li>\n<li>Mixed stints where the bike transitioned between K00 slick and K01 rain without a tire change<\/li>\n<\/ul>\n<p>In every condition, the casing has held. No race-ending failures. No surprise delamination. No shoulder separations. That is the standard the Kingtyre Fullgas Racing Team holds itself to, and it is the standard any serious endurance racing team should expect from a supplier.<\/p>\n<h3 id=\"compound-and-casing-telemetry\">Compound and casing telemetry<\/h3>\n<p>Across the 2024 Le Mans stint data, three telemetry findings are worth highlighting:<\/p>\n<ul>\n<li><strong>Hot-pressure window stability.<\/strong> Across stints of 30 to 90 minutes, hot pressure remained within a 0.15 bar envelope of the target. This is what allows teams to plan pit stops by stint duration, not by pressure-grip curve guessing.<\/li>\n<li><strong>Tread temperature gradient.<\/strong> Across the tread width, temperature variation stayed below 12\u00b0C \u2014 a sign of good heat distribution through the steel-belt package. Wide thermal gradients are what cause catastrophic grip loss at the end of a stint.<\/li>\n<li><strong>Wear rate.<\/strong> Tread depth loss followed a predictable curve through ~85% of usable life, then accelerated. Teams can plan tire changes against this curve without surprise.<\/li>\n<\/ul>\n<p>This data is the same dataset that informs the K06 semi-slick and the K905 sport-touring tire compound selection. Endurance racing is the fastest iteration loop KingTyre has, and the technology transfer to consumer products is one of the reasons a Chinese tire manufacturer can credibly serve the racing tire market at all.<\/p>\n<hr>\n<h2 id=\"where-the-k00-fits-and-where-it-doesnt\">Where the K00 fits \u2014 and where it doesn&#8217;t<\/h2>\n<p>The K00 is a purpose-built endurance racing slick. It is the right tool for:<\/p>\n<ul>\n<li><strong>24-hour endurance racing<\/strong>, including the FIM Endurance World Championship, the Bol d&#8217;Or, the 24 Heures Motos at Le Mans, and national-level 12- and 24-hour series.<\/li>\n<li><strong>Club-level endurance racing<\/strong>, including 4-hour, 6-hour, and 8-hour events where teams run a single tire set per stint and value compound consistency.<\/li>\n<li><strong>Track day operators<\/strong> who run dedicated race-prep bikes on slicks for high-end customer track days and need a tire that survives heavy use without surprises.<\/li>\n<li><strong>Professional sprint racing<\/strong> at national and international levels, where a four-compound system gives teams qualifying-versus-race strategy options.<\/li>\n<\/ul>\n<p>The K00 is <strong>not<\/strong> the right tool for:<\/p>\n<ul>\n<li><strong>Public road use.<\/strong> It is NHS-rated (Not for Highway Service) and has zero tread pattern. It will fail safety inspection in every major motorcycle market.<\/li>\n<li><strong>Street-legal track-day bikes.<\/strong> Use the <a href=\"\/ja\/products\/k06\/\">K06\u30bb\u30df\u30fb\u30b9\u30ea\u30c3\u30af<\/a> instead \u2014 it carries an E-mark, has minimal edge grooves for wet performance, and will get you to and from the circuit legally.<\/li>\n<li><strong>Wet track conditions.<\/strong> Use the <a href=\"\/ja\/products\/k01\/\">K01 rain tire<\/a> \u2014 designed for high-speed water drainage, with grooves across the contact patch and validated endurance racing pedigree (over 850 laps completed in wet conditions during the 2024 race).<\/li>\n<li><strong>Mini GP or small-displacement racing.<\/strong> Use the <a href=\"\/ja\/products\/k96\/\">K96 Mini GP tire<\/a> or the K00 Slick Minibike line in 10- and 12-inch sizes.<\/li>\n<\/ul>\n<hr>\n<h2 id=\"b2b-sizing-matrix-for-racing-teams-and-distributors\">B2B sizing matrix for racing teams and distributors<\/h2>\n<p>The K00 is available in a wide range of 17-inch sizes for Superstock, Supersport, Superbike, and endurance classes. Below is the current production matrix:<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.6;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">\u30b5\u30a4\u30ba<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Code (GH \/ G \/ GR \/ GC)<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Weight (kg)<\/th>\n<th style=\"border:1px solid #ddd;padding:10px 12px;background:#f5f5f5;text-align:left;font-weight:600;\">Recommended rim<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">95\/75 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">G1759 \/ GR759 \/ GC759<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">3.53<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT2.50\u2013MT3.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">110\/70 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">G1744 \/ GR744 \/ GC744<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">4.25<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.00\u2013MT3.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">115\/75 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">G1755 \/ GR755 \/ GC755<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">4.25<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.00\u2013MT3.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">120\/70 R17 (front)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH743 \/ G1743 \/ GR743 \/ GC743<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">4.98<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">120\/70 R17 (rear)<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">G1760 \/ GR760 \/ GC760<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">4.80<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">125\/70 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">G1713 \/ GR713 \/ GC713<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">5.01<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">140\/70 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH745 \/ G1745 \/ GR745 \/ GC745<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">5.55<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT3.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">160\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH732 \/ G1732 \/ GR732 \/ GC732<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">6.16<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT4.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">180\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH714 \/ G1714 \/ GR714 \/ GC714<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">6.81<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT5.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">190\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH761 \/ G1761 \/ GR761 \/ GC761<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">7.06<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT5.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">200\/60 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH726 \/ G1726 \/ GR726 \/ GC726<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">8.00<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT6.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">200\/65 R17<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">GH769 \/ G1769 \/ GR769 \/ GC769<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">8.12<\/td>\n<td style=\"border:1px solid #ddd;padding:10px 12px;\">MT6.00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>For B2B buyers: minimum order quantities, FOB pricing, container loading, and certification documentation (ECE R75, DOT, CCC, ISO 9001) are available on request. KingTyre&#8217;s 15,000 m\u00b2 Tianjin plant produces 300,000+ motorcycle tires annually, with 150+ sizes across the full product line, and ships to 45+ countries.<\/p>\n<hr>\n<h2 id=\"how-to-specify-a-k00-order\">How to specify a K00 order<\/h2>\n<p>For racing teams, distributors, and series organizers, the standard K00 order should include:<\/p>\n<ol>\n<li><strong>Size and compound.<\/strong> Specify the size from the table above and the compound prefix (GH, G, GR, or GC) based on the track and ambient conditions expected.<\/li>\n<li><strong>Quantity by compound.<\/strong> Most endurance teams order a 60\/30\/10 split across Medium, Hard, and Soft compounds. Sprint teams typically order more Super Soft and Soft for qualifying.<\/li>\n<li><strong>Rim fitment.<\/strong> Specify the measured rim and approved rim range. The K00 is approved for the rim range shown in the table; ordering a tire for an out-of-range rim will void performance expectations.<\/li>\n<li><strong>Batch traceability.<\/strong> Every K00 carries a batch code on the sidewall and a barcode-traced manufacturing record. Distributors should request the batch sheet with each shipment.<\/li>\n<li><strong>Warmers and pressure gauges.<\/strong> Optional but recommended for team kits \u2014 KingTyre supplies matching warmer blankets and digital gauges for consistent pit-lane pressure checks.<\/li>\n<\/ol>\n<p>For volume orders (full container or recurring series supply), KingTyre offers batch reservation programs \u2014 a compound and size can be reserved against a season&#8217;s planned consumption, with staged deliveries aligned to the team&#8217;s race calendar. This is the same supply discipline the Kingtyre Fullgas Racing Team uses internally.<\/p>\n<hr>\n<h2 id=\"faq\">FAQ<\/h2>\n<p><strong>Is the K00 street legal?<\/strong><br \/>\nNo. The K00 is NHS-rated (Not for Highway Service) and has no tread pattern. It is intended for closed-circuit use only. For a street-legal alternative, see the KingTyre K06 semi-slick, which carries an ECE R75 approval and is designed for road-legal track-day riding.<\/p>\n<p><strong>What is the difference between K00 and K06?<\/strong><br \/>\nThe K00 is a full racing slick with no tread pattern, designed exclusively for closed-circuit use. The K06 is a semi-slick \u2014 it has minimal edge grooves that allow it to meet ECE R75 type approval, making it street legal in Europe, the UK, and most other markets that follow UNECE rules. On a warm dry track, the K06 delivers 90\u201395% of the K00&#8217;s grip, with the practical advantage of being able to ride the bike to and from the circuit.<\/p>\n<p><strong>Can I use the K00 in the wet?<\/strong><br \/>\nThe K00 is a dry-compound slick and should not be used in standing water or on a wet track. In wet conditions, the K01 rain tire is the correct choice. The K01 is engineered for high-speed water drainage, carries an ECE R75 approval, and has been validated across hundreds of laps in wet stints at the 24 Heures Motos.<\/p>\n<p><strong>How long does a K00 last in endurance racing?<\/strong><br \/>\nA typical K00 set can complete 400\u2013700 laps of endurance racing depending on compound, track, ambient conditions, and rider style. The 2024 Le Mans 24H saw over 850 laps completed across multiple tire sets, with most individual stints falling in the 30 to 90 lap range per set.<\/p>\n<p><strong>What is the difference between the four K00 compounds?<\/strong><br \/>\nThe compounds differ in working temperature window and wear rate. Super Soft (GH) works at 60\u201395\u00b0C and is fastest on cool tracks. Soft (G) works at 75\u2013110\u00b0C and is the standard sprint compound. Medium (GR) works at 85\u2013115\u00b0C and is the endurance workhorse. Hard (GC) works at 100\u2013125\u00b0C and is built for hot ambient or abrasive tracks.<\/p>\n<p><strong>How does KingTyre validate the K00?<\/strong><br \/>\nThrough the Kingtyre Fullgas Racing Team&#8217;s endurance program at the 24 Heures Motos (Le Mans). Across five consecutive campaigns (2022\u20132026), the team has accumulated over 1TB of telemetry data covering temperature, wear, pressure, and lap-time behavior. This data feeds directly back into the K00&#8217;s compound and casing specifications, and informs KingTyre&#8217;s street, sport, and adventure tire development.<\/p>\n<p><strong>Can the K00 be supplied with a private label?<\/strong><br \/>\nKingTyre supports OEM and private-label programs for racing tire distributors and series organizers. Minimum order quantities, branding options, and packaging specifications are available on request. Note: the K00 itself is a KingTyre-branded product for retail and track use; private-label programs apply to selected product lines under separate commercial terms.<\/p>\n<p><strong>Where is the K00 manufactured?<\/strong><br \/>\nThe K00 is manufactured at KingTyre&#8217;s 15,000 m\u00b2 production facility in Tianjin, China. The facility is ISO 9001 certified, uses advanced hydraulic curing presses and a four-compound tread blending system, and supports barcode-driven inventory tracking for batch traceability. Every K00 shipment includes manufacturing batch records and applicable type-approval certificates.<\/p>\n<hr>\n<h2 id=\"what-to-read-next\">What to read next<\/h2>\n<p>The K00 is one of five KingTyre tire families covered in our September hub-and-spoke content series. To get the full picture:<\/p>\n<ul>\n<li><strong>Article 6: Endurance Racing Motorcycle Tires \u2014 7 Years at Le Mans 24H: A Field Report.<\/strong> A case-study retrospective of the Kingtyre Fullgas Racing Team&#8217;s five-year endurance program, with telemetry, race-by-race results, and what it means for amateur teams and distributors.<\/li>\n<li><strong>Article 1: Are Slick Motorcycle Tires Street Legal?<\/strong> The regulatory landscape for slicks across the EU, UK, US, Canada, Australia, Japan, and Brazil.<\/li>\n<li><strong>LinkedIn spoke \u2014 The Business of Racing Tires: Why Endurance Racing Matters in B2B.<\/strong> A B2B-framed look at what the Le Mans program means for tire distributors and importers.<\/li>\n<li><strong>Medium spoke \u2014 Why Endurance Racing Matters in Motorcycle Tire Development.<\/strong> The technology-transfer story from race to street tire.<\/li>\n<\/ul>\n<p>For product specifications and ordering:<\/p>\n<ul>\n<li><strong><a href=\"\/ja\/products\/k00\/\">K00 Racing Slick product page<\/a><\/strong> \u2014 full size matrix, compound options, and order forms<\/li>\n<li><strong><a href=\"\/ja\/products\/k01\/\">K01 Rain Tire product page<\/a><\/strong> \u2014 wet-condition companion<\/li>\n<li><strong><a href=\"\/ja\/products\/k06\/\">K06 Semi-Slick product page<\/a><\/strong> \u2014 street-legal track-day tire<\/li>\n<li><strong><a href=\"\/ja\/%e3%82%b3%e3%83%b3%e3%82%bf%e3%82%af%e3%83%88\/\">Request a Wholesale Catalog<\/a><\/strong> \u2014 for racing teams, series organizers, and racing tire distributors<\/li>\n<\/ul>\n<hr>\n<p><strong>About KingTyre:<\/strong> KingTyre (Tianjin Kingtyre Group Co., Ltd.) is a professional motorcycle radial tire manufacturer headquartered in Tianjin, China. Founded in 2015, the company operates a 15,000 m\u00b2 ISO 9001 certified production facility with 300,000+ tires of annual capacity, 150+ tire sizes, and exports to 45+ countries. Certifications include ISO 9001, DOT, ECE R75, and CCC. The Kingtyre Fullgas Racing Team has competed at the 24 Heures Motos at Le Mans since 2022, with a best lap time of 1:47.22, 16 pit stops in the 2026 race, and over 1TB of cumulative endurance telemetry. https:\/\/www.chinakingtyre.com\/<\/p>","protected":false},"excerpt":{"rendered":"<p>How the KingTyre K00 racing slick is engineered for 24-hour endurance racing. Compounds, radial casing, telemetry-validated performance from Le Mans 24H.<\/p>","protected":false},"author":1,"featured_media":1133,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[23],"tags":[526,490,75,79,1109,1150,83],"class_list":["post-1129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tire-knowledge","tag-bias-ply-vs-radial-motorcycle-tire","tag-k00","tag-kingtyre","tag-kingtyre-k00-slick-tire","tag-kingtyre-tire-compound","tag-motorcycle-racing-slicks","tag-racing-slicks"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.1 (Yoast SEO v25.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>K00 Racing Slick Engineering | Endurance Motorcycle Tire Guide | KingTyre<\/title>\n<meta name=\"description\" content=\"How the KingTyre K00 racing slick is engineered for 24-hour endurance racing. 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