How to Calculate Tire Size?

1 Answers
LaCalvin
07/29/25 10:08pm
Tire size does not need to be calculated as the dimensions are clearly marked on the tire sidewall. For example, in the code 175/70R1477H: 175 indicates the tire width is 175mm, 70 represents the aspect ratio (the height to width ratio) of 70%, R stands for radial construction, 14 is the rim diameter in inches, 77 is the load index, and H denotes the speed rating. Automotive tires are crucial components of a vehicle, directly contacting the road surface and working in conjunction with the suspension system to absorb shocks during driving. They ensure excellent ride comfort and smooth operation while maintaining optimal traction between the wheels and the road, thereby enhancing the vehicle's traction, braking performance, and off-road capability.
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