Originally Posted by XavVD
It is indeed strange but when I do not park with parking brake, this noise is gone... At least when I tried it. I will recheck tomorrow...
Are you sure that the 2 systems are fully independent? Is it also the case on m sport brake?
No, I don't know for sure, but it has always been like that before, on older BMWs. Hydraulic disc brakes, and cable operated parking brakes implemented as drum brakes integrated in the rear brake rotors.