The reasons for vehicle deviation are: the specifications or air pressure of the front wheels on both sides are inconsistent, the caster angle or camber angle of the front wheels on both sides are unequal, the gap between the front wheels and the bearings on both sides is inconsistent, the camber angle or elasticity of the leaf springs on both sides is inconsistent, the difference between the left and right wheel bases is too large, the gap between the wheel brakes is too small or the brake drum is not round, which leads to a brake jam problem and causes the brakes to drag.
Extended data:
Wheel deviation and eccentric wear
If the steering wheel is straight, but the car is still running off, it is likely that there is something wrong with the steering wheel toe angle. However, if a pair of steering wheels fail, they will be in the inner eight-character state, but they will not deviate.
Whether there is a problem with toe angle or inclination, eccentric wear and deviation will occur. Toe angle's eccentric wear is more serious, because the relationship between the wheel and the ground at this time is equivalent to oblique cutting, and it will be worn badly for tens or hundreds of kilometers, and the wear will often cover the whole tread. However, the eccentric wear caused by the problem of inclination angle will be slightly, and it will only be seen when driving hundreds of kilometers or even more.
Problems in four-wheel alignment are basically around two situations, namely, deviation or eccentric wear. Basically, deviation will only occur if there is a problem with the toe angle or inclination angle of one side wheel.
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