The most common fault is that the four-wheel alignment data of the vehicle is faulty, such as the toe-in and inclination data in the four-wheel alignment is incorrect. So we need to do another four-wheel positioning to adjust these two data to the standard value. The toe-in can be adjusted, but the inclination data cannot be adjusted. If the inclination data is incorrect, the corresponding parts need to be replaced for adjustment.
1, four-wheel alignment is not allowed.
As a result, four tires are not on the horizontal and vertical straight lines required by the standard, so two wheels on the same side will eat tires when driving, or the front wheel or rear wheel will not go straight, and the vehicle will correct itself, resulting in abnormal friction between a certain part of a tire and the ground, which will accelerate wear.
2. Inappropriate toe-in adjustment can also lead to tire eating, that is, the front wheel leans slightly inward at an angle similar to the inner picture, which is the best angle for high-speed and stable driving. All cars have their own toe angle. If this angle is not adjusted properly, they will eat tires. The reason is the same as the first one.
3. Failure of the steering gear will also cause the tire to bite and run off.
4, the girder is uneven, and deformation can also cause eating tires. For example, some accident cars eat tires because the beam is deformed.
If the air pressure of each tire is too different, it will eat the tire.
A summary of the causes of automobile tire gnawing
Eating tires on both shoulders is due to insufficient tire pressure or overload.
The tire is eaten in the center of the crown because the tire pressure is too high.
The outside of the tire is eaten because the toe-in or camber angle is too large and the steering knuckle arm is bent.
The inside of the tire eats the tire because the toe-in or camber angle is too small.