Front wheel bearings play an important role. As well as keeping the front wheels attached to the vehicle, they help ensure a smooth drive and direct steering response. On the E60/1 5 Series and E63/4 6 Series, the first sign of worn bearing will be a grinding, clicking, or metallic knocking sound. This replacement front wheel bearing kit is manufactured by FAG in Germany, an original equipment supplier of bearings to BMW, and repackaged by IPD. Complete with bearing pre-pressed into the hub, and new bolts.