Whuh-whuh-whuh-whuh-what is that noise? It's happening any time you drive, it's rhythmic and whirring — or maybe a consistent hum, or even an ear-splitting screech when you turn the wheel — and it's ...

Automobile wheels spin round thanks to the miracle of wheel bearings. The bearings themselves contain rollers that spin around inside a cage. Wheel bearings are often tapered against the coned races ...