[shchow]

Originally Posted by foosh

No matter how much you want to say that it's straight-line vs. cornering in BMW's favor, the stock C6 Z06 did a 7:43 at Nurburgring, and the stock ZR1 variant did it in 7:26, both on stock run-flat tires. No stock BMW has broken 8 minutes, even with Horst von Saurma at the wheel.

The "pure performance" argument is no contest in favor of Corvette. Ironically, Corvette also wins the fuel economy contest, and it weighs nearly 500 lbs less, with 200+ more HP at the top of the food chain, and 100 at the Z06 level. Now, if you want to talk about what is the better all-around street daily-driver, I'm with you on the M3.

I currently use an E93 M3 as my daily-driver, and I've also owned a C6 Z06, which was more trouble-free and easier to maintain than any BMW I've ever owned.

True,
But I would wager that a professional driver would be faster around the 'Ring in an M3 than your average bloke would be in a Vette.
Sorta like Tiger Woods would still kick your butt with a 20 year old set of clubs, and you using the latest set.
My point is that these times are nice to compare and use as a general yardstick, but does not mean very much when trying to apply that to each individual.