How to Read Tire Specifications?
2 Answers
Tire specifications can be found on the sidewall of the tire, where they are labeled in the order of tread width, aspect ratio, rim diameter, load index, and speed rating. Taking 225/60R17 99H as an example, 225 refers to the width of the tire tread, 60 indicates the height of the tire sidewall, R stands for radial tire, 17 means the tire fits a 17-inch rim, 99 is the load index of the tire, and H represents the speed rating of the tire. Tires are one of the essential components of a vehicle, directly contacting the road surface and working together with the vehicle's suspension to absorb shocks during driving, ensuring good ride comfort and smoothness. They also maintain excellent traction between the wheels and the road, enhancing the vehicle's traction, braking, and off-road capabilities, while bearing the weight of the car.
I always advise friends to look for the tire model on the sidewall, where there's a combination of numbers and letters, such as 205/55R16. 205 represents the width in millimeters, 55 is the aspect ratio percentage, R stands for radial construction, and 16 is the rim diameter in inches. Load index like 91 and speed rating like V are also crucial. When checking, find a well-lit area, bend down, and feel the sidewall with your hand—if it's dirty, wipe it clean with a damp cloth. Don’t forget that front and rear tire models may differ, especially for SUVs; verify all four tires to avoid mistakes. The vehicle manual often records these specifications, and when replacing tires, match the original ones to avoid affecting balance and fuel efficiency. I also use mobile apps like 'TireScan' to identify models—just a tap saves the data. Regularly checking these details helps prevent accidents and extends the car's lifespan.
