I've read several threads about the tranny problems the X5's have. My 2001 4.4 Auto currently has about 110k miles on it and I'd like to be prepared. Overall the car has been babied, I'm the 2nd owner.

Is there a mileage range these usually fail at? I've heard it can go out anytime over 100k miles???

Also, how much (on average) should I be expecting to pay for a rebuild? If it goes, I'll probably pull it myself and take it to a shop to have the work done.