Originally Posted by mr.bob
I want to get a 19" Tire and Wheel set also for my 08 E92, but BMW says that because of the AWD, I can not go with a 19" wheel. The rolling diameter is too much of a difference and will cause premature Front End Failure.
Tire Rack says this is BS and I should be able to put a 19" setup on my XI with out any warranty problems.
That is BS - the issue is matching the rolling diameter front to rear.