Had my 4 wheel alignment done today and here are the specs.... Hope this helps out on the rear tire wear...
All in all I had my 4 wheel alignment, brake system flush, oil change, battery cable recall, scope check and vehicle condition inspection (found out my vacuum pump is starting to leak oil externally. $942 parts and labor if they do it) all for $450.28. My SA takes care of me pretty good.
If your close enough, go to Peter Pan BMW and talk to Pete Scallon and tell him Shanon sent you and he'll take care of you...
2006 BMW 650i Sport/Premium Package
+ Various Mods & Upgrades