Just did the passenger side today on my '06 with 38,000km. The upper bolt on the front mount was halfway out :S
Replaced all 4 with equivalent McMaster-Carr bolts + Nord-locks. I couldn't figure out how to get to the driver's side bolts from under the car, so that'll be for another night...
Just wanted to consolidate the most useful DIY info sources in one place for everyone's future reference:
http://www.bimmerfest.com/forums/sho...9&postcount=39
http://www.bimmerfest.com/forums/sho...8&postcount=66
http://www.bimmerfest.com/forums/sho...6&postcount=52
http://www.bimmerfest.com/forums/sho...9&postcount=27