2. Reason:
A. Inaccurate positioning of four wheels causes four tires not to be on two straight lines in the horizontal and vertical directions required by the standard, so two wheels on the same side will eat tires when driving, or the front wheel or the rear wheel will not be in a straight line, and the vehicle will correct itself, resulting in an abnormal increase in friction between a certain part of the tire and the ground, accelerating wear.
B. Inaccurate toe-in adjustment can also lead to tire wear. What is toe-in? Indicates that the front wheel is slightly tilted inward, similar to the inner figure. This is the best angle for high-speed and stable driving. All cars have their own toe angle. If this angle is not adjusted properly, the tires will be eaten. The reason is the same as the first one.
C. Failure of the steering gear will also cause tire gnawing and deviation.
D uneven and deformed girders can also cause tire wear. For example, some accident cars eat tires because the beam is deformed.
E. If the air pressure difference between each tire is too large, the tire will be eaten. If tires of different specifications are mixed together, they will eat tires. The reason is the same.