I got a ride in an E46 and noticed something funny about the windows.
The windows are kind of "stand alone"...they are not "in the frame" of the door like on my old Japanese car. When you close the door with the window up, the top most part of the door IS the window...ie there's no metal frame in which the window is enclosed.
I'm not sure why BMW does this. I would think it maybe makes it look sleeker...but you have to be careful to close the door from the actual door and not the window. In my Japanese car you can grab the top corner of the door, right at roof level and it's metal. In the BMW it is the window itself.
Do they do this on sedans as well?
I'm just curious. Sorry to belabor the point.