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How is the size of a tire calculated?

1 Answers

DeEvan

07/30/25 2:01am

The size of a tire is not calculated; the size data is printed on the sidewall of the tire. For example, in 175/70R1477H, 175 represents the tire width of 175mm, 70 indicates the aspect ratio of the tire section is 70%, R stands for radial tire, the rim diameter is 14 inches, the load index is 77, and the speed rating is H. Below is more information about car tires: 1. Car tires are one of the important components of a vehicle, directly contacting the road surface and working together with the car suspension to mitigate the impact during driving, ensuring good ride comfort and smooth driving. 2. They ensure good adhesion between the wheels and the road surface, thereby improving the vehicle's traction, braking, and off-road capability.

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