That’s my observation on the button as well on my 08 48i, but I think the car drives and handles superbly either way. I’ve also dealt with some clunks, lower suspension arms were my culprit. I’ve started ordering all my parts through FCP because of their lifetime warranty and how these cars chew through suspension parts. I think my strut bearings are giving it up now, have a little chatter over bumps from that area.