Chunkster:
.... The ride quality also sucks too...
Really? I'm guessing the one you've driven must've had a problem with its suspension, because according to Autocar's full test of the M5, for an ultra fast supersaloon, its ride quality is pretty damn decent.
http://www.autocar.co.uk/CarReviews/RoadTestsOnTheRoad/BMW-5-Series-M5/212071/
".....We have often said that run-flat tyres and active steering spoil the fine road manners of the 5-series, so the fact that BMW’s Motorsport arm has no truck with such items is more than a little telling. Shorn of these features, the M5 provides an object lesson in high-end chassis and steering development. From the way it tackles tight B-roads to the way it rides your average British high street, the M5 impresses massively and proves deeply satisfying. And it’s not as if you must sacrifice a significant degree of body control to enjoy such cossetting progress.
Beyond the wonderful damping, you have the ..."