The last number and letter combination are the load index and speed rating. Load rating is how much weight the tyre can support. A tyre with a load index of 83 can support 487kg of weight. The V ...

Consumer Reports put tires to the test by driving 1,000 miles per day for 16 days, and analyzing the wear from those 16,000 miles to determine service life.

Owner satisfaction: Tire owner-satisfaction ratings are determined by ... 130 mph; and V , 149 mph. Some tires have speed ratings of W, 168 mph and Y, 186 mph. While such speeds may seem wildly ...