Quote:
Originally Posted by footie
Getting back to the GT2 vs ZR1, I might be wrong here but I understood the ZR1 to be slower when it selects top gear due to it's extremely long gearing and due to it's excessive amount of both power and torque it should have problems getting off the line cleanly. Based on the track surface used by Autocar and the well know winds the whip up there I not at all surprised that the Porsche won on the day.
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You're not wrong. The ZR1 has better gearing for acceleration compared to other Corvettes, but it's still taller than the GT2. And if the Z06's frontal area is anything to go by, it will have a worse overall drag number than the GT2. ~0.75 vs 0.66 for the GT2.
For launching, it is further handicapped against the GT2 by
1) poorer weight distribution
2) lower-aspect tires that are runflats; a softer sidewall would aid in traction at the start
On a good surface, it will cleanly beat the GT2 to 60. But right off the line, the GT2 is still quicker than the ZR1 (0.2s faster to 31 mph in the MT test).