Tailoring the car’s many driving algorithms now happens via an enhanced menu design through the command screen in the centre. The parameters vary from Comfort, Sport and Sport Plus and are easier to organise now. A new track-only M Drive button joins others in the centre tunnel next to the stubby gearlever and its purpose is of a single-action kill switch for every conceivable safety sensor and also the display screen, which means no navigation or music in this mode.
In terms of driving dynamics, the M8 Cab offers a very similar experience to the coupe except a refreshing gust of wind rushing past your head.
If it misses the sharpness and solidity of its helmeted cousin due to its being 125kg heavier than the coupe and with a truncated roof, then BMW engineers have hidden this very well.
Far away from the city of Faro where the roads started opening up and become twisty, it was apparent very quickly that the drop-top has plenty of dynamic ability and superior grip levels for a spirited breakfast run.
What it doesn't do well enough is sound better than the more pedestrian M850i xDrive. No points for guessing that strict European noise emission regulations have played a part here. But it’s an entertaining enough aural experience which settles down into an enjoyable rather than annoying timbre when you turn down the histrionics.
Driven kindly, the M8 cab is claimed to munch on 10.6l/100km and it’s a wall poster for a weekend top-down cruise provided your doddle isn’t on Portugal’s famously narrow, outer city roads where the car’s 1,908mm girth was a truly intimidating prospect given that we were in left-hand drive cars.