One of the most important pieces of information on a tire is its speed rating. This is indicated by a single letter, such as ...

For S-speed-rated tires, it's 112 mph; for T, 118 mph. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. Some tires have speed ratings of W, 168 mph and Y, 186 mph.

For S-speed-rated tires, it's 112 mph; for T, 118 mph. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. Some tires have speed ratings of W, 168 mph and Y, 186 mph.

The HP108 tires have a 16-inch rim size, 91 load index, a tire aspect ratio of 55 and a V speed rating. They're designed for highway performance. Fullway tires are manufactured by Qingdao ...