The car bearings sold with us are car wheel bearings. Car wheel bearings are an important part of the vehicle's wheel system. They provide smooth wheel rotation and help maintain the weight of the car, and also reduce friction between the rotating wheel and the axle. Without reliable wheel bearings, the wheels would not be able to rotate efficiently, which would affect the quality and safety of driving. Wheel bearings also help reduce vibrations and noise caused by the rotation of the wheels.