Originally Posted by E60orBust
Seriously? I would have thought the e90 M3. Think about it, M3, four doors, NA V8 motor with ~414HP. That pretty much sets it alone in BMW's line up. The only other M-4 door is the M5 and that will always have 4 doors.
Not really "only".
All these have 4 doors:
Past BMWs: 2009 E93 335i -2010 E60 535i -2008 E60 M5 - 2013 M3 - 2008 E64 M6
Current BMWs:2015 M5 On Order July ED - 2014 F30 320i