1 position is the brake disc. Brake disc is the most important part of the braking system we know, which directly affects the braking effect. Moreover, the brake disc is a metal product, which is easy to rust. If the brake disc rusts, it may suddenly break down in a certain work, which will have very serious consequences. Therefore, it is very important to maintain the brake disc regularly.

The second position is the car chassis. In fact, I think all riders can understand that, after all, the position of the automobile chassis is relatively low, except for the tires, its relative position is relatively low. It is possible that some stones or rain seen on the road will cause damage and corrosion to the car chassis, which has the function of supporting the car body. Once the corrosion is serious, the consequences are unimaginable.

The third position is that the wagon is rusty, especially at the corner. In a sense, the station wagon is only painted on the outer layer of metal products, and it is also likely to rust, especially the paint surface of the car is damaged. Once it rusts, it may further expand, which will inevitably increase the resistance encountered during the driving of the car and cause many problems.