Most good shops will not only replace and lube the center driveshaft bearing but will straighten and balance the dirveshaft as well! Just as important IMHO. Best shop I know of that does BMW dirveshafts is Driveline of Portland. I've talked to them a few times and they won't do Audis! Let's keep harping them! :) Another place I've heard good things about is Vallhalla in Colorado. Later, Dan