How to Interpret Tire Codes?

[DiManuel]

For example, 215/55-R16-93H, the specific explanations are as follows: 1. Section Width: 215 (mm) refers to the width of the tire section, divided in 5mm units. The tread width of family cars generally ranges between 185-235mm, while the rear tires of sports cars can exceed 300mm to enhance grip. 2. Aspect Ratio: The slash / simply separates the preceding and following numbers, with the latter number 55 representing the aspect ratio. It is calculated by dividing the tire section height by the section width, hence the height-to-width ratio. 3. Radial Tire: The letter R stands for radial tire, which is the standard structure for family car tires. The absence of R likely indicates a bias-ply tire. The number 16 (inches) following the letter denotes the rim diameter, which, similar to the aspect ratio, affects vehicle handling, driving experience, fuel consumption, and visual appearance. 93 is the load index.