Do not grease the tire bolts and nuts

In wheel maintenance, in order to prevent the bolts and nuts on the wheels from rusting, a small number of private car owners apply lubricating oil to the bolts and nuts during installation. After the bolts and nuts are tightened, they have the characteristics of self-locking with each other. After applying lubricating oil, the self-locking coefficient between the two becomes smaller and the self-locking performance decreases. When the car is driving at a high speed, the bolts and nuts are easy to loosen or even fall off, resulting in driving accidents.