http://www.f30post.com/forums/showthread.php?t=815487
Now Testing M Carbon Ceramic Brakes!
• Double slatted kidney grilles
• M4 badge on kidney grilles (a la M6) (currently covered)
• LED headlights
• LED tail lights
• Carbon ceramic brakes (optional) being tested in signature gold
color (just as on F80 M3 prototype)
• Hood power dome/bulge
• Sculpted double-bubble carbon fiber roof (like M6 Coupe)
• Production side mirrors (still under camouflage)
• Integrated trunk spoiler
• Wide fenders
• Slanted exhaust tips
• Production sideskirts
• Wearing Continental ContiSportContact tires - 275/35 rear (like F80
M3)
• Gap in front fender for air breather vent? Location is too high to
be the same 'boomerang' vent seen on the 3 Series GT and 4 Series Coupe
prototypes, but it could take another form on the M4.
• Rear bumper design more clearly seen through camouflage now, which
appears to have an aggressive squared-off design at the edges - a bit like
the the F30 M Sport rear bumper.
