What are the model specifications of semi-trailer tires?

1 Answers
Edith
07/29/25 9:35am
Semi-trailer tire models range from 8.25R steel tires to 12.00R steel tires. Below is relevant information about tire models: Tire specifications: Tire specifications are commonly represented by a set of numbers. The first number indicates the tire section width, and the second indicates the rim diameter, measured in inches. For example, 165/70R14 denotes a radial tire with a section width of 165 millimeters, an aspect ratio of 70, and a rim diameter of 14 inches. Some tires may include additional letters or symbols with special meanings: "X" denotes high-pressure tires; "C" denotes reinforced tires; "B" denotes bias-ply tires; "-" denotes low-pressure tires. M and S are abbreviations for Mud and Snow, respectively, indicating that the tire is suitable for use on snowy and muddy roads. Tire model: Tire model markings mostly appear as: 215/70R15, where the numbers represent the following: 215 indicates the tire section width in millimeters; 70 is the aspect ratio, representing the ratio of the tire sidewall height to the tire section width, with 70 indicating 70%; R is the abbreviation for Radial, indicating the tire has a radial structure; 15 is the outer diameter of the rim in inches.
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