Atzporsche:
no way, that would put the Caymen R on par with the 997.2 GT3
I know it sounds hard to believe, but I wouldn't be surprised if the Cup tire advantage was 3 sec. Having driven on a short/curvy track not too different than Hockenheim in my 944 Turbo S with Cups made my laptimes 4 seconds shorter (but the tire sizes were larger with the Cups, so not exact comparison).
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73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs). Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550 Maranello