Our cars, with the convertible top and lousy coefficient of drag, are at a disadvantage on a long track like the Nordshleife. Still, it seems to be the international standard these days, so I figure it's an interesting topic. Here are the times I've tripped over, presumably all for stock Redlines/Opels.
From
http://strikeengine.com/lap-times:
8:34
8:35.74
From a pre-production mule, as posted on the Solstice forum:
8:47.39
I'd be curious to see how a tuned car with good tires would do. Anybody have more data? Maybe our European members?