Touching back on a previous post on this thread:
I had the pleasure of meeting two brothers yesterday at Bruntingthorpe, one has a M3 CSL and the other a Porsche GT3.
They took me out in both, and both unbelievable cars, the sound, grip and handling is second to none, and the breaks!!
However the CSL and GT3 could not keep up with my CL55. I outrun the CSL within a few seconds of launch, and the GT3 after about 70mph.
We were both side by side, and the CSL left me standing going round the bend onto the two mile straight at about 70ish, however I caught him by 150mph and then slowly past him down the two mile straight. His true top speed was 165mph, and mine 176mph.
Different card for different jobs though.