What do the numbers and letters on car tires represent?

[DeJeremiah]

Taking 205/60-R16 as an example, 205 represents the tire width; /60 represents the aspect ratio of the tire section; R indicates that the tire type is radial; and 16 represents the rim diameter. More details about tires are as follows: 1. Tire width (mm). The wider the tire, the larger the contact area with the ground, which correspondingly leads to higher fuel consumption but also provides better grip, resulting in improved vehicle stability. 2. Aspect ratio of the tire section (percentage of tire height to width). The aspect ratio is a major factor affecting the vehicle's sensitivity to road conditions. Models known for their handling performance often use tires with a low aspect ratio; models known for comfort and off-road vehicles typically use tires with a high aspect ratio. 3. Tire type code. Common representations include "X" for high-pressure tires, "R" and "Z" for radial tires, and "-" for low-pressure tires, etc. Passenger cars on the market generally use radial tires. 4. Rim diameter (inches). This indicator specifies the size of the wheel rim that the tire fits.