Originally Posted by bigjae1976
If you ask me, BMW eliminated the cooling to reduce air turbulence in the wheel well...an MPG thing. BMW has been big about wheel area turbulence which explains the slots on the sides of the 1M bumper.
BMW probably thought better air flow management in the wheel wells is better than the limited effect of the brake ducts.
It will be interesting to see if the new M3 has brake ducts as does the new F30 because it appears that it will use the air curtain slots (not seen on the F30).