Can anyone tell me how to get my local dealer (Sandia BMW in Albuquerque) to adjust the rear suspension on an 01 525 sport wagon back to non sport settings.

I was told there is no such setting at the dealer and yet read in Roundel that you simply take the car to a Authorized BMW mechanic and they would be familiar with the resetting so as not to go through a set of rear tires in 5400 miles.
I under stand that there will be a tradeoff with "superior handling", but with $3.40 per gallon gas and new camera monitors everywhere in Albuquerque, agressive handling is gone.

I drive like a little old lady and they still wear the tires out like I'm slidding the corners.
This past winter I noticed several times on flat, strait, icy surfaces the rear end tailed off to one side or the other.

Any help?  This is my third E-39 and I  love the car, I just hate the sport model tire eating.