E28's have a rear taillight seal issue and a trunk lid seal issue. It's a bad design and it's important to stay on top of it, otherwise you'll have a tire-well full of water which will then find it's way into the back seat and you can end up with a rusted trunk floor and a ruined carpet... (I was hugely relieved to find my trunk floor is still solid and rust free. The carpet is another matter,
Don't do this:
Somewhere along the line a PO glued the seal onto the body and the taillight housing (out of frustration, I guess, because the pass side wasn't glued, doesn't leak and the drivers side was still leaking)
I have to clean up this mess and then I still have to fix the leak.
Vintage cars, baby!
