What does the R18 cross-section mean?

[LeCarlos]

R represents the tire type, radial tire, and 18 represents the rim diameter of 18 inches. The cross-section is defined as the shape of the section perpendicular to the axial direction of the beam. The following is an introduction to car tire-related content: 1. Cushioning impact: Car tires are one of the important components of a car, directly in contact with the road surface, and together with the car suspension, they cushion the impact received during driving. 2. Comfort: Ensuring good ride comfort and smooth driving, ensuring good adhesion between the wheels and the road surface, improving the car's traction, braking, and passability, and bearing the weight of the car. The following is extended information on tire pressure-related content: 1. Function of low-pressure tires: Low-pressure tires are mainly used for private cars. 2. Function of high-pressure tires: High-pressure tires are mainly used for large trucks or passenger cars. 3. Tire pressure: The tire pressure for cars running at high speeds is 2.5 kilograms per cubic centimeter.