Nice review. I agree with the BMW X5 35D does feel its need one more gear. Then again, lot of members complained about BMW 8 speed and its slow start. So I am happy to stick with 6 speed auto.
My advice: switch over to the world of 18". Its nice and comfortable.
2012 BMW X5 Vermilion Red Xdrive35d with Premium Package, 3rd Row Seats, and Adaptive Drive