I am looking to install something as well, but I want to keep as much trunk space as possible. I was thinking of installing something like this...
http://www.crutchfield.com/p_108BASS...nk.html?tp=114
Or
http://www.crutchfield.com/p_236XTL2...0P.html?tp=114
Has anyone ever dealt with something like this? How hard is it to install since we are dealing with iDrive and the Enhanced Premium Sound?
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2012 F10 550xi M Sport, Dark Graphite Metallic II, Black Nappa, Aluminum Hexagon Trim, Cold Weather Package, Ceramic Controls, Premium Sound Package, Luxury Seating Package, 30% Tint, Painted Reflectors