We've shared with you the
M3/M4 official specs and our
ride-along/workshop notes, now have an on board look as we ride with Bruno Spengler in the M4 prototype at BMW's proving grounds near Munich.
Bruno shares his thoughts on the EPS (electric power steering), turbos, transmission and testing on the Nurburgring.
And if you're wondering whether the in-cabin sounds you hear are artificially enhanced via Active Sound, we asked and were told by one of the BMW engineers that there was absolutely no artificial sound feature. But, other outlets have written that the M3/M4 will use the speakers to amplify the sound, so we have contradictory info. A request for clarification is in at BMW and we should have an answer soon.
And in case you missed it, here's a video featuring Bruno Spengler and Timo Glock testing the M3/M4 on the Nurburgring.