How is tire size represented?

[OBennett]

Tire size is printed on the sidewall and can be represented in two ways: 1. High-pressure tires: High-pressure tires are generally represented as "tire diameter × tire section width", such as 34×7. 2. Low-pressure tires: Low-pressure tires are generally represented as "section width ~ rim diameter", such as 7.5~20, with the unit in inches (1in=0.0254m). Additional information: 1. Tire markings: Tires also have many markings, for example, D is used for light vehicles, F for medium-sized vehicles, G refers to standard vehicles, and H, L, J are used for large luxury and high-performance vehicles. 2. Radial tires: If an R is added to the sidewall, such as 175R13, it indicates that the tire is a radial tire, with a section width of 6.9in (175mm) and a rim diameter of 13in (330mm). The word RADIAL is usually also engraved on the tire.