Well there is the changing the battery issue.
the car has to be programmed to have the right charging profile for the
new battery . Then there's RFT tires and the lack of a real dipstick .
Ok I have finished ranting.
A lot of car company's are doing the stereo integrated with a lot of other stuff these days it's not BMW unique, but its really problem if you want something else in your car.
head unit
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.e90post.com/forums/showth...hlight=dynavin