A ZR1 with just the addition of Michelin Cup tires(now an available stock option) shaves 7 seconds off the previous time moving the car up to #7 on the Nurburgring list. The playing field is now equal as many manufacters use Cups for time trials at the Ring.
http://www.autoweek.com/article/2011...NEWS/110609854
http://www.fastestlaps.com/tracks/nordschleife.html