Tire Speed Ratings, Explained A Simple Explanation of Tire Speed Rating What Is Tire Speed Rating? A tire’s speed rating indicates the optimal speed that the tire can safely maintain over time. In short, it’s the fastest speed a tire can handle before it no longer performs as designed....
KEY: 1) Tire width; 2) Aspect ratio; 3) Radial-tire designation; 4) diameter; 5) Load rating with speed rating; 6) Heaviest spot on tire; 7) Tread-wear rating; 8-9) Traction and temperature ratings; 10-11) Mud-and-snow or three-peak-mountain rating; 12) Vehicle-specific marking;...
Speed rating:89H is the service description. Separated from the main code, it represents the tire's load and speed ratings. This tire's 89 load index represents 1,279 pounds (per tire), and the speed rating of H represents 130 mph. The speed rating is less important in the U.S., w...
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Speed rating The final letter (sometimes more than one) on your car tire’s sidewall indicates the tire speed rating. Similar to the load index, this is a reference code used to look up the actual recommendedtop speedin an index. Tires with higher speed ratings will perform better and prov...
Speed Ratings An additional thought on trailer tires is to always check its speed rating. Even though you might be able to get a great deal on a heavy-duty, 14-ply set of tires, the speed rating may be lower than you think. Most trailer tires’ maximum speed ratings check in at 65-...
Speed Ratings are based on the fastest speed a tire can safety achieve and still perform as specified. A tires speed rating is based on lab settings with new and undamaged tires under controlled conditions. The letters A-Z correspond to a specific speed which can be easily referenced on the...
Speed ratings are based on tests in which engineers run the tire at 6.2 mph steps, in 10 minute increments, until the required speed has been met. Tire Sidewall Markings: Explanation of Tire Size Designations: Tire Speed Symbols: Tire Load Index Table – Maximum Load Per Single Wheel: ...
Speed rating It determines how fast you can drive on recommended road surfaces under the allowable loading limits. Passenger tires come in lower speed ratings compared to high-performance or racing tires. Tire size Replacing your tires with new ones of equivalent sizes is necessary. A different si...
Speed Rating: The tire's speed rating is void if the tire is repaired, retreaded, damaged, abused, or otherwise altered from its original condition. Thereafter, it should be treated as a non-speed rated tire. See "Tire Speed Ratings" in this manual. Improper repair voids the tire Limited...