What does 235/55r18 mean?
1 Answers
235/55r18 represents: 235 indicates the tire's cross-sectional width of 235mm; 55 represents the aspect ratio, which is the percentage of the tire's cross-sectional height divided by its width. A higher value means a thicker tire, lower mobility, but increased comfort; r stands for the tire type, radial tire, and 18 indicates the rim diameter of 18 inches. Below is relevant information about tire specifications: 1. Tire specifications: Tire specifications are commonly represented by a set of numbers. The first number indicates the tire's cross-sectional width, and the latter represents the rim diameter in inches. For example, 165/70R14 means a tire with a width of 165mm, an aspect ratio of 70, and a rim diameter of 14 inches for a radial tire. Some tires may include other letters or symbols with special meanings: "X" indicates a high-pressure tire; "C" stands for reinforced; "B" denotes a bias-ply tire; "-" represents a low-pressure tire. M and S are abbreviations for Mud and Snow in English, indicating that the tire is suitable for use on snowy and muddy roads. 2. Tire model: Tire model markings mostly appear as: 215/70R15. The meanings of these numbers are: 215 indicates the tire's cross-sectional width in mm; 70 is the aspect ratio, representing the ratio of the tire's sidewall height to its cross-sectional width, with 70 meaning 70%; R is the abbreviation for Radial, indicating the tire has a radial structure, and 15 is the rim's outer diameter in inches.