BMW tech heard the noise today and agreed it was pretty loud. He's convinced it can't be the windshield seal though ("That glue just doesn't fail") and thinks it's coming from somewhere in the dash. I say that's impossible unless it's an area that water drains through, because the problem gets a lot worse when the car is washed. I really don't want them taking the dashboard apart unnecessarily, but oh well. Maybe I'll show him the posts here about that top seal degrading.
2009 e90 sedan | sport pkg | navigation