What is the unit of measurement for tires?
1 Answers
The international standard code for tires is measured in millimeters, representing the section width and the aspect ratio as a percentage, followed by the tire type code, the rim diameter in inches, the load index indicated by the load-carrying capacity code, and the speed rating code. Here is an example to explain the meaning of the numbers and letters in a tire model: 225/60R17 99H. 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 can be 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 that 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. A load index of 99 means the tire can bear a maximum weight of 775 kg. 6. H: Represents the speed rating of the tire, which is the maximum speed the tire can handle. A speed rating of H means the tire can handle a maximum speed of 210 km/h.