damn. that's always scared the crap out of me on the highway... a couple years ago i actually had a wheel hub get kicked up at me on the highway. the FD RX7 in front of me got a flat tire from it, it bounced off my hood and broke my windshield in 2 pieces. one of the loudest sounds i've ever heard. badass though.
WTB: Complete e46 M3 rear end