I checked the old and current archives. Did not find any real help.

When I go over a bump or close a door fairly hard. I hear a rattle in my sunroof (sedan). I can tap on the headliner and get a rattle.

Not sure where or how to approch this. Could this be some sort of adjustment or a worn component such as a guide or even the seal? I even thought it was a loose door panel. Does not seem to be the case.

This type of rattle really bothers me. A BMW should not rattle. I appreciate any help anyone can offer.