I have to agree what most are saying. The manners of the X5 while towing is great as far as steering, aceleration, braking, stability and overall towing manners. Just don't think the backshifting is all that great as I would think this causes a bit more wear and tear as well as I think it would cause a bit more heat in the trans as well.. Just my opinion that the X5 backshifts a little to early while towing and easily could pull most grades without backshifting in my opinion. Thanx much for the replies and hope to get more opinions...