Can the four-wheel hub bearings of a car last over 10,000 kilometers under normal conditions?

Generally speaking, under normal circumstances, car wheel hub bearing should be inspected when the vehicle has traveled 50,000 kilometers, and replaced around 100,000 kilometers. However, this answer cannot be applied universally. The service life of car wheel hub bearing is also related to road conditions and personal driving habits. Car wheel hub bearings are part of the transmission system. 

Using incorrect tools (such as hammers or impact wrenches) for improper installation can damage the internal components of the wheel-end bearings, leading to premature failure of the hub bearing. Additionally, reusing old accessories like bolts, nuts, snap rings, cotter pins, and sealing rings instead of replacing them with new parts (also causes issues). 

Poor-quality hub bearing cannot withstand high pressure. Wheel bearings made of inferior materials undergo improper heat treatment, which results in early wear and failure. Related to driving conditions, driving in deep water or mud can cause wheel bearing malfunctions. 

Water, mud, or other contaminants (such as dust or road salt) can enter the bearings through the seals, contaminating the grease and wearing down the bearings. After car modifications, larger or wider rims, tires with a low aspect ratio, stiffer shock absorbers, and suspension springs will impose higher loads on the wheel bearings, accelerating their wear. 

To minimize the impact on the service life of wheel bearings, wheels, tires, shock absorbers, and springs should be installed in accordance with the specifications of the car manufacturer. When bearings are used normally without external impact, they barely need to be replaced. So far, the most durable bearings have been used for over 500,000 kilometers and are still in service. 

Most cases of bearing damage are caused by external impacts! Hitting the curb, driving over rough roads that jolt the tires, etc., can easily damage the bearings. Currently, most trucks still use old-style tapered roller bearings. This type of bearing has a simple structure but requires regular maintenance.