I believe that car owners are familiar with non-contact 4-wheel alignment, but compared with simple maintenance such as changing oil and filter, non-contact 4-wheel alignment has become a bit "high-end" because of its difficulty in operation.

At the same time, if the non-contact 4-wheel alignment is not accurate, there will be many problems such as the car's steering wheel is difficult to turn, the steering wheel shakes, and the direction is offset. In severe cases, it will also cause uneven tire wear, floating driving feeling, swaying and many other phenomena, which also pose a certain threat to driving safety. Therefore, we need to have a deep understanding of the non-contact 4-wheel alignment.

Positioning, as the name implies, is to determine the position. Positioning issues are involved in the process of mechanical processing and assembly. In the process of processing, incorrect positioning will cause errors in the size and shape of the workpiece. If the positioning is inaccurate during the assembly process, the mechanical structure of the car cannot operate in a safe designed state, resulting in excessive wear or damage, and the non-contact 4-wheel alignment of the car is the same. The process of installing or restoring the car's steering wheels, steering knuckles, front and rear axles, etc. according to the designed position is called 4-wheel alignment.

In 4S stores, we often see technicians doing 4-wheel alignment for cars. After they drive the car onto the non-contact 4-wheel alignment instrument and park it, they install objects on the 4 tires, then point it at the computer, and after a while the board starts to knock on the tires, and the 4-wheel alignment is completed.