I am also a new M3W-owner. I had the clancking sound when shifting. The sound increased, and I started to experience vibrations from behind. After a while I couldn’t drive more than 50 km/h due to the vibrations. I brought it to the dealer. The problem was a loose joint where the bolts/nuts were loose. Apparently this happened rather often. They tightened it and used locktite to fix it. It was fine after this, but now I can hear a faint clanck when downshifting. I have asked the dealer to check it.
