Tire Speed Rating
Whatever speed you’re going, you want to know that your tires can keep up in safety and performance. The tire speed rating symbols on the sides of your tires reflect the maximum tire speed your tire is designed to handle.
|Tire Speed Symbol||Maximum Tire Speed (mph)||Vehicle Type|
|L||75||Off-Road & Light Truck Tires|
|M||81||Temporary Spare Tires|
|N||87||Temporary Spare Tires|
|Q||100||Studless & Studdable Winter Tires|
|R||106||H.D. Light Truck Tires|
|S||112||Family Sedans & Vans|
|T||118||Family Sedans & Vans|
|H||130||Sport Sedans & Coupes|
|V||149||Sport Sedans, Coupes & Sports Cars|
|Z||over 149||Sport Sedans, Coupes & Sports Cars|
|W||168||Exotic Sports Cars|
|(W)||over 168||Exotic Sports Cars|
|Y||186||Exotic Sports Cars|
|(Y)||over 186||Exotic Sports Cars|
The tire speed rating is the last symbol on your tire spec. The other numbers represent the section width, aspect ratio, radial construction, rim diameter and load index, followed by the tire speed rating symbol.
|205 = Section Width in Millimeters|
|60 = Aspect Ratio|
|R = Radial Construction|
|15 = Rim Diameter in Inches|
|91 = Load Index|
|V = Speed Symbol|
What Tire Speed Rating Do I Need?
Tire speed ratings vary depending on your type of vehicle, tire size and dimensions, road conditions and load bearing limitations. For the best control and the safest driving experience, make sure to check the recommended speed rating outlined by your vehicle’s manufacturer (usually found in your owner’s manual or door placard). Choose tires that are the recommended tire speed rating, or a faster tire speed rating, but never a slower one.
When selecting your tire speed rating, another consideration is tread wear. Generally, tires with higher speed ratings are made with a more aggressive rubber compound, which can reduce the overall life of the tread, and therefore the tire.
Tire Load Index
The tire load index is determined by the maximum load carrying capacity of the tire. Each tire is designed to handle a specific load and should meet or exceed the OEM tire load ratings. Below is a list of the tire load index table and the maximum weight for each load index.
|Tire Load Index||Pounds||Kilograms|
Find your tires online for your car or truck at Firestone Complete Auto Care.
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