On the other hand, due to the inclination of the wheels, the left and right front wheels rotate outward respectively. In order to correct this problem, if the left and right wheels have inward angles, plus or MINUS zero, the left and right wheels can keep moving in a straight line and reduce tire wear.
Note: If you drive on a straight road, you need to constantly adjust the steering wheel to keep the car driving in a straight line; If it is found that the vehicle does not automatically correct the deviation after turning or needs a large external force to assist in correcting the deviation; At high speed, it is found that the steering wheel shakes even violently, which leads to the decline of vehicle stability and requires four-wheel alignment.