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What do the letters on tires mean?

1 Answers

SophieLynn

07/29/25 11:32pm

Taking 225/60-R17-99H as an example, the meanings of the numbers and letters in the tire model are as follows: 1. 225: Represents the section width, simply understood as the width of the tire tread. 2. 60: Represents the aspect ratio, simply understood as the height of the tire sidewall. 3. R: Represents the tire type code, where R stands for radial tire. 4. 17: Represents the rim diameter, indicating the tire is suitable for 17-inch rims. 5. 99: Represents the load index of the tire, which is the maximum weight the tire can bear. 99 corresponds to a maximum load capacity of 775KG. 6. H: Represents the speed rating of the tire, which is the maximum speed the tire can withstand. H corresponds to a maximum speed of 210KM/H.

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