Driveshaft, Axle and Drivetrain Noise FAQs
Follow along to learn more about these unwanted noises.
Q&A: Why Wheel Bearings Fail
The leading cause of a wheel bearing failure is its seal. The inside of a bearing can be a hot place. When a bearing is cooling off, the contracting metal, air and lubricant can create a vacuum that is usually held by the seals. If the seals are worn and can’t hold the vacuum, the bearing or sealed hub unit will suck in outside air, debris and water. In some parts of the country that use salt on the roads, it can almost be as corrosive as ocean water on the wheel bearings.