I noted the M5 V10 pulled 186mph was it?? Circa the 507bhp....just out of curiosity and not for an argument i am genuinely interested, this is faster than the 500bhp Saffs of old which weighed what 400 kilos lighter with lots more torque. So what made the M5 with the same sorta power beat a Saff? Better brakes? Better aerodynamics? Better driver?