If it has been lowered I did not realize it (I am newbie ya know..lol) Fenders do rub the tires when you hit a decent bump in the road, so that may explain that.
Yet another noobie to BMW, Z4, and the Z4-forum. Picked up a 2003 Z4 3.0 about three weeks ago. Still beaming with pride and still learning as much as I can. Looking forward to reading and learning here. Thanks again