1. Check the difference of tread depth between the damaged tire and the spare tire;
2. The pattern depth difference is less than 1 cm, and the spare tire needs to be replaced;
3. The front and rear wheels are upside down. Automobile keel, also called rim, wheel and tire bell, is a metal part that supports the inner contour of tire. The types of car keel are:
1, steel wheel hub: simple manufacturing process, relatively low cost and strong metal fatigue resistance;
2. Alloy wheel hub: light weight, smaller inertia resistance and higher manufacturing accuracy. When driving at high speed, the deformation of alloy hub is small, which is beneficial to improve the straight-line driving ability of the vehicle and reduce energy consumption.
Million car purchase subsidy