What are the causes of car deviation?

[LeTyler]

Here are the reasons that affect car deviation: 1. Different tread patterns on both sides of tires: It is best to use the same type of tires for the entire vehicle. The two tires on the front axle and rear axle must be the same, and the tread depth must also be the same. Tires exceeding the wear limit must be replaced. 2. Unequal tire pressure on both sides: Unequal tire pressure will cause the tires to become different in size, inevitably leading to deviation when rolling. 3. Deformation of front shock absorber springs and inconsistent cushioning on both sides: The quality of the shock absorber springs can be judged by pressing or comparing after disassembly. 4. Failure of front shock absorbers: After the front shock absorbers fail, the two suspensions will be uneven during vehicle driving, resulting in uneven force and causing deviation. 5. Excessive wear of vehicle chassis components and abnormal gaps: The ball joints of the steering rods, rubber bushings of the support arms, and rubber bushings of the stabilizer bars are common parts where gaps are prone to be too large. The vehicle should be carefully inspected. 6. Poor return or separation of a certain tire's brake can also cause directional deviation. 7. Overall deformation of the vehicle frame: Excessive difference in the wheelbase on both sides beyond the maximum allowable range can be measured with a tape measure. If it exceeds the range, it must be corrected with a calibration bench. 8. Not paying attention to the tread direction when installing tires: Check whether the tires were installed without noticing the tread direction.