Your Guide to Tire Speed Rating. When it comes to selecting new tires for your car, truck, or SUV, the tires' speed rating is just one of many factors you should consider.

Each letter in the tire speed rating chart corresponds to a maximum speed limit. The chart is arranged alphabetically from A to Z, except for H which is unconventionally placed between T and V.

This speed rating is expressed as a letter in the alpha-numeric code that immediately follows the tire size. Letters range from L to Y, and cover maximum speed ranges from 75 mph to more than 186 mph.

The codes on tires at the faster end of the scale can appear with some variations. Michelin and General Tire place a Z in front of the R in the size code for tires with speed ratings of W or Y ...

The ratings run from M for 130 km/h to Y for 300 km/h. In North America, where the maximum legal limit is 75 mph or 122 km/h in some U.S. states, virtually every passenger car tire sold exceeds ...

Load Rating, Load Capacity, And Speed Rating Almost all diesel trucks come with E-load-rated tires from the factory. These tires are usually rated at a capacity of more than 3,000 pounds per tire.

Tire sidewalls are a jumble of numbers and letters. Let us help you decode the tire size, age, speed rating, and other important data that is found on a tire.

Speed Rating refers to the maximum tire speed. For example, a V rating has a maximum speed value of 149 mph. M+T, M/T, or M&T means the Rubber Manufacturers Association deems the tire to meet its ...