Originally Posted by SCRAPPYDO
Not really believing the vette can out perform the McLaren, I did some research on this.
The vette must have had the Z07 package. Why do I say this. Upon inspection of the times, in all situations the McLaren is a faster accelerating car, so the vette must have won on braking.. How is this possible you ask. Simple, tires.
the Z07 vette has R comp tires. But so does the McLaren...
Still for comparison, the top gear test track has the Mclaren 20+ spots ahead of the Z06
So go figure..
I think you've got it basically right, but remember the Z06 that ran at TopGear was an early (07?) example, they've made a bunch of detail improvements since then, most importantly the tires and the shocks. The TopGear car was still on the crappy Goodyears IIRC. Look at the times for Lightning lap from C&D, they've run the Z06 three times, the latest Z07 example is over six seconds faster around VIR than the original one from 2007. Also the TG track is really a horsepower track, VIR and Laguna put higher premium on grip, thus the TG track plays to the McLaren's advantage.
As aschen said, the Z06 with the Z07 option package (brilliant marketing, GM) bumps up to $100k, it includes the carbon brakes and splitter from the ZR1 to go with those gumball tires. Awesome track times none the less.