For people looking for a real world comparison with extremely similar power/weight, chassis enhancements and aerodynamics to the F80 M3/4, need to look no further than the actual results from the E92 M3 GTS. The new M3/M4 should be very close to these performance and track numbers. Also when the GTS came out, BMW quoted a 0-100 km/hr time of 4.4. Thus high 3s 0-60 seems completely reasonable and in line with the simulation estimates.
http://www.nospeedlimit.com/photos/s...tbmwm3gts6.jpg