If the shaft rusts and disintegrates without rust and maintenance, the contact surface, bolts and shaft center between the rim and the shaft are easy to rust, and it is difficult to restore in place when the rim is reinstalled. The contact between the rim and the shaft is inconsistent, and the car will shake and shake. E when driving at high speed, it will seriously affect the operation and safety of vehicles and cause major traffic accidents.
If the rim is not maintained, the contact surface between the rim and the shaft is easy to rust. This makes it difficult to remove the tires.