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.

These won't be true all-season tires for me ... a 65,000-mile warranty for V-rated tires. Looking at the specs, the main ...