The rear wheel bearings are designed to ensure a smooth drive, as well as having the practical job of keeping the wheels attached to the car. A subtle metallic grinding, clicking, or knocking noise from the rear of the car can be the first signs of wear. This replacement rear wheel bearing kit is manufactured by FAG, an original equipment supplier of bearings to BMW, and repackaged by IPD. Comes complete with circlip, securing plate, and hub nut.