Quote:
Originally Posted by solstice
He has I’m sure, the 7:16 CSL time is massively faster at the surface but when you factor in that the tires are very different something doesn’t seem right with the CSL time.
It’s observed that the Cup 2 R is up to 0.5s faster per kilometer than the Cup 2. That’s 10s on Nordschleife. Porsche’s hot shoe Lars Kern agree, he had this to say about the Cup 2 R on the 992 GT3:
“Of course, a lot of the new GT3's 'Ring time improvement comes down to the optional Cup 2 R tires. But Kerns says simply swapping those tires onto the old GT3 wouldn't get you anywhere near the new car's 17-second-per-lap improvement. Even on the less-aggressive Cup 2s, Kern estimates the new GT3 should be "at least" seven or eight seconds quicker than the old GT3”
This would make the CSL 4s faster than the M3 Touring on the same tires. It doesn’t seem enough with the power, weight, aero and cog advantages of the CSL.
It become even more strange when you compare with the M4C Sport Auto time of 7:31. A 15s gap to the CSL. If the R tires is a 10s gain and the factory vs Sport Auto driver difference is similar to the 9s it was for the M4 GTS’s ring time, well then the M4C would be faster with some margin than the CSL on the same tires…
It seems that maybe the Cup 2 * tire could be much closer to the Cup 2 R than we think or BMW has sandbagged the CSL factory time. Something is off.
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Good point.
I'm more on the theory that the M3/4's times are great for everyday road cars (which they are, from coupe to touring) and kill all competitors, but rather poor as true track cars (M4 CSL), which means that starting from a road car you can't achieve too much on the track, even with massive work and fine tuning it's physically impossible to turn a 3-series into a track car (mainly due to weight and weight balance).