‘The Norisring is a street circuit unlike any other, and its history is anything but orthodox’ THE GRUFF, GRATING BARK RISES to a domineering pitch. Just 20 minutes ago we extracted the M4 CS from the eerie silence of its hometown press fleet lair – all deserted, dimly lit corridors on a Sunday afternoon, clammy bunker-like warmth cloaking neat rows of pristine BMWs in stifling silence, ready for collection. Now, as we head north from Munich on the A9 autobahn, the traffic is light, the road dry, conditions perfect.
Without the synthetic drone of the artificial noise generator with which other M4 models are equipped, the twin-turbo six at last sounds like an actual internal combustion engine, with hints of the S50 from the E36 M3, the volume almost oppressive…
