Wheel bearings hold your wheels on and allow them to spin properly. They are not an automotive component to be taken lightly. Most wheel bearings are sealed at the factory and do not require replacement until, perhaps, 150,000 miles. However, there are many cars on the road whose wheel bearings do require regular service. Check your owner’s manual or ask Privitt Automotive Service if your car is one of them.
Wheel bearing maintenance generally means keeping them lubricated. This service is performed by removing the wheel bearing from the wheel hub assembly, greasing it manually or with a device called a wheel bearing packer, and then reinstalling it.
If your vehicle requires periodic wheel bearing maintenance, it is essential that you follow the maintenance schedule. Over time, the grease in your wheel bearings can break down and become less effective. Also, grease can escape through the bearing until there is not enough left to lubricate the bearings.
Without proper lubrication, the wheel bearings could overheat. When that happens, your wheels could fall off. Warning signs include a wobbly wheel or a low growl or hum coming from any of your wheels. In either case, you should bring your car in as soon as possible.