I don´t know is this there, but Ac Schnitzer launch pretty nice tuned 1M. They drive Sachsenring with a lap time of 1:35.80 min, Porsche 997 GT3 laptime is 1:36.10 min whit semi-slics (autobild) Must say that pretty impressive, 1M have lots of potential
Maybe Bmw work lot to make stock 1M slower than M3.
Hockenheim circuit laptime Ac Schnitzer 1M 1:11.70 min vs. stock 1:14.10 min (sportauto) or M3 G-power 1:11:80 min.
There you can read more "fastest BMW ever": http://www.ac-schnitzer.de/en/bmw-ca...record-charge/