How to Identify Tire Size?
1 Answers
Car tire size can be identified by checking the data on the sidewall of the tire. Tire size is a fundamental parameter when purchasing replacement tires, and it's generally best to directly select tires with the same specifications as the original factory size, as these have been designed and validated by the manufacturer to be the most compatible with the vehicle's powertrain. Below is an introduction to tire specifications: 1. Tire specifications are commonly represented by a set of numbers. The first number indicates the tire's section width, and the second number represents the rim diameter, measured in inches. For example, 165/70R14 denotes a radial tire with a width of 165 millimeters, an aspect ratio of 70, and a rim diameter of 14 inches. 2. Some tires may include additional letters or symbols with special meanings: "X" indicates a high-pressure tire; "C" stands for reinforced; "B" denotes a bias-ply tire; "-" signifies a low-pressure tire. The letters M and S are abbreviations for Mud and Snow, respectively, indicating that the tire is suitable for use on snowy and muddy roads. 3. Certain tires have an arrow or the word OUTER-SIDE marked on the sidewall, indicating the tire's rotation direction. If a small umbrella symbol is depicted on the sidewall, it means the tire is suitable for driving in rainy or slippery conditions. 4. The DOT marking indicates that the tire has been certified by the U.S. and Canadian transportation departments. Following the DOT mark, there is usually a 4-digit number, which, unlike other markings, is not part of the original mold but is instead stamped onto the tire later.
