Originally Posted by clarence
It's not standard in USA. 2NH is not yet available on US-spec cars.
The calipers are different as the fronts on 2NH are 370mm - standard 335i fronts are 345mm.
The rears on 2NH are also larger than standard.
Just checking I've got you right - you're saying the front rotors on the M Sport brake system are 370mm? That's serious stuff!