The speed rating of the tire is indicated by English letters on the sidewall of different tires, indicating the maximum speed at which the tire can carry the specified load under specified conditions.

Example: 215/55R16 93W, 205/55R16 91V

Among them, W and V are the speed levels of the tire, which respectively indicate that the maximum speed of the tire is 270 km/h and 240 km/h.

There are many types of tires, which are mainly classified by the structure, pattern and climate of the tire. According to the internal structure of the tire, they can be divided into two types: radial tires and bias tires. It is divided into four types: stripe pattern, transverse pattern, mixed pattern and off-road pattern. Generally, radial tires are used in family cars.

Since the tire is the only part of the car that is in contact with the ground, it is necessary to regularly check the use of the tire during the driving process to ensure that the tire pressure is within the appropriate range.

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