Interestingly, I just talked to a BMW Master Tech and he said not to do the staggered setup on my car. He said it would keep triggering the Traction Control, actually slowing the car down!. He said the way to go was to keep everything the same size.
Now I'm firmly of 2 minds...
550ix, Dark Graphite Metallic II, M-package, Dinan Stage 2, 20" wheels, conven pkge, cold weather pkge, Prem Pkge 2, Paddle Shifters, vent seat pkge, sport transm pkge, fold-dn rear seat, etc. Black Dakota Leather, Light Wood trim