im in germany and took my 335i out to nurburgring right before winter. it was when i had about 1700 miles on the car (not sure exactly because all my gauges are set in km). on the second lap (keep in mind this is a 28 km course) the oil temp went really hot and i pulled over to let it cool down. i heard some other complaints about engines shutting down because of getting overheated. anyone else?
other than that, the car performed great. my last car was an '01 m5 and i would take the 335i over it for the track anyday. might sound crazy, but the 335i has a much more raw feeling to it