How to Check the Maximum Speed Rating of Car Tires?
2 Answers
The maximum speed rating of car tires is indicated by a series of alphanumeric characters on the tire sidewall. For example, in the code '215/60R17H,' the letter 'H' at the end represents the tire's maximum speed rating. By identifying the speed rating letter, you can refer to a speed rating chart to determine the corresponding maximum speed. In this case, 'H' corresponds to a maximum speed of 210 km/h. Each tire's sidewall is molded with this speed symbol. Different tires have varying speed standards, and it is crucial to strictly adhere to the tire's speed limit while driving. Failure to do so can significantly reduce the tire's lifespan and increase the risk of a blowout.
I remember checking the tire speed rating is quite simple—just squat down next to the car and look at the small imprints on the tire sidewall. There's usually a string of codes, like the common 195/65R15 91H, where the last letter 'H' is the speed rating symbol. It indicates a maximum speed of around 210 km/h. Similarly, 'T' stands for 190 km/h, and 'V' for 240 km/h. You can easily look up the full alphabet chart on your phone. Whenever I wash my car or change tires, I take a quick glance to confirm the tire's condition. This isn’t a trivial matter—if you exceed the speed limit, the tire can overheat from friction, leading to bulges or even blowouts, which is especially dangerous on highways. I also recommend not just checking once; after a few years of use, the tire’s speed capability may degrade, so regular rechecks are safer. Developing this habit makes driving much more reassuring.
