This is the Genuine BMW replacement wheel bearing and hub assembly to fit the front of the F10 M5, F12 M6, F06 M5 Gran Coupe.Replace your wheel bearings when you hear groaning or rumbling sounds from the front. These sounds increase in frequency as speed increases and will get louder as you turn the wheel (and put load on the worn side). Failing wheel bearings can also attribute to annoying 'pad knockback' on the track.