How is the speed rating indicated on tires?
2 Answers
Tire speed ratings are represented by letters. Here's an explanation: 1. The letters corresponding to tire speed ratings indicate the speed grade, which represents the maximum speed a tire can carry a specified load under defined conditions. 2. J, L, M, N, P, Q, R, S, T, U, H, V, W, Y, Z are the letters corresponding to tire speed ratings. Here's an introduction to the speed grades corresponding to the tire speed rating letters: J-Y represent 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 240, 270, 300 kilometers per hour respectively, while Z represents speeds above 240 kilometers per hour.
The speed rating on tires is actually quite simple to identify. Just look for a series of size numbers on the sidewall of the tire, such as 205/55R16 91V. The last letter 'V' in this sequence represents the speed rating. These letter codes indicate the maximum speed the tire can withstand, with 'V' corresponding to 240 km/h, 'H' to 210, and 'T' to 190, each defined by international standards. I often remind everyone not to overlook this marking when selecting tires or during routine checks, as it directly impacts safety. If your car is performance-oriented, a lower speed rating could lead to tire blowouts or loss of control. In cold weather or during high-speed driving, a higher speed rating can reduce accidents. It's best to have a mechanic at a repair shop verify this for you and match it with your vehicle's manual. Regular tire maintenance can also help avoid trouble.
