What do the different speed ratings stand for and what does it mean?
A speed rating is a miles per hour rating that the specific tire is rated for. In the United States the speed rating is really a moot point simply becasue we have speed limits on most,if not all,of our highways. However we offer all speed ratings of tires. It is also important to remember that because your vehicle came with a high speed rated tire does not mean you have to replace it with the same speed. The lowest speed rating is Q which is for up to 99 miles per hour. Below is the chart of all available speed ratings: Q = up to 99 mph, S = up to 112 mph, T = up to 118 mph, U = up to 124 mph, V = up to 149 mph, W = up to 168 mph, Y = up to 186 mph, Z = above 149 mph. Very rarely will you come across a W or Y rated tire. The jump is usually from V rated to Z rated.
