So I am convinced enough to do mine at 45000 miles. Got the kit and Esso from BavAuto.com and will do it next weekend. Will post you all on what I find once I drop the pan.
My car has been running fine just feels a little gritty in auto mode, manual mode is still crisp. 2002 4.4i X5.

here is the link:
http://www.bimmerfest.com/forums/sho...d.php?t=181682