Haha, I don't know anything about drifting...anywho, here are some vids of a 535i with supposedly 500+ rwhp doing the deed:

http://www.ter-tech.com/drifting/vid...drifting-1.wmv
http://www.ter-tech.com/drifting/vid...drifting-2.wmv
http://www.ter-tech.com/drifting/vid...drifting-3.wmv