What Do the Markings on Tires Mean?

1 Answers
VonReese
07/30/25 2:02am
Tire model numbers and letters explained: Taking 225/60-R17-99H as an example. 1. 225 represents the section width, which can be simply understood as the width of the tire tread. 2. 60 represents the aspect ratio, which is essentially the height of the tire sidewall. 3. R stands for the tire type code, with R indicating a radial tire. 4. 17 represents the rim diameter, meaning the tire is suitable for 17-inch rims. 5. 99 indicates the load index of the tire, which is the maximum weight the tire can bear. 6. H represents the speed rating of the tire, indicating the maximum speed the tire can handle.
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