Four-wheel alignment is based on the original data of the vehicle as parameters. After professional technicians use special instruments to accurately measure the vehicle, the vehicle is comprehensively diagnosed based on the measurement results and the original design standards. Finally, adjustments, corrections, repairs and other operations are performed to restore the car to original factory standards and achieve optimal handling and driving conditions, which is called car four-wheel alignment.
Four-wheel alignment uses the action of various components of the suspension system to make the tires have a certain angle relative to the vehicle coordinate system. Maintaining the correct four-wheel alignment angle can ensure the straight-line driving and control stability of the vehicle. It can reduce steering resistance and provide correcting force after steering. It can also ensure the tight connection between the tire and the ground, provide greater tire grip, reduce improper tire wear and tire wear, and ensure stability when turning.
The four wheels of the car have fixed positioning data. The front two wheels are not perpendicular to the ground, but have a slight inclination. The main function is to make the vehicle turn easily and make the wheels close to the inner bearing of the wheel hub to reduce the load on the outer bearing and hub nut, which is beneficial to safe driving.
Look carefully at your wheels. They will appear either "eight-shaped" or "V-shaped". This is what we call the camber angle. The camber angle is the intersection of the transverse plane passing through the center of the wheel and the wheel plane. The angle between the line and the vertical line on the ground. Inclination toward the outside of the vehicle body is called "camber" and inclination toward the vehicle body is called "inversion." Usually ordinary civilian cars generally use "camber angle", while "camber angle" design is generally used more in racing cars.
Abnormal four-wheel alignment will generally cause three problems: tire eating, deviation and abnormal direction, as well as heavy steering and drifting. Tire eating refers to abnormal wear, which means that the same tire has different degrees of wear, with one side being higher and the other being lower.
Tire eating occurs mostly on the front wheels. It may occur on one wheel or both front wheels. Vehicles often drive on roads with poor road conditions, such as rugged mountain roads, rapid collisions caused by obstacles, serious accidents, replacement of many tires, replacement of some parts of the chassis, etc. Causes abnormal four-wheel alignment. Sometimes it is clear that the steering wheel is straight, but the car is found to run to one side. This phenomenon also indicates that the four-wheel alignment is faulty. Also, after we reached 100 kilometers per hour on the highway, the steering wheel shook violently, so it was time for a four-wheel alignment.
Four-wheel alignment is not a regular maintenance item. Usually, four-wheel alignment is only needed when the abnormalities mentioned above occur. Most abnormalities that occur are caused by human factors, and it is bad behavior in daily driving that causes the need for a four-wheel alignment. Of course, it is not impossible to do four-wheel alignment regularly. After all, it is done so that we can run safer and more comfortably.