Here is a list of some of the fastest stock production cars.
7:25 Nissan GT-R V-Spec (Unofficial time measured by bystanders at the track)
7:27.82 Pagani Zonda F Clubsport (Semi-wet conditions)
7:28 Porsche Carrera GT
7:29 Nissan GT-R
7:32.02 Porsche 997 GT2 (Semi-slicks tires)
7:34 Koenigsegg CCR (Cold conditions)
7:38 Mercedes-Benz SLR 722 GT
7:40 Chevrolet Corvette C6 ZR1 (Damp track, 2 occupants)
7:40 Mercedes-Benz SLR McLaren
7:40 Bugatti Veyron 16/4
7:42 Porsche 997 GT3
7:42 Ford GT
7:42.9 Chevrolet Corvette C6 Z06 (Muggy conditions)
7:43 Lamborghini Murcielago
7:44 Pagani Zonda S
7:46 Lamborghini Gallardo Superleggera
7:46 Porsche 996 GT2
7:47 Ferrari 599 GTB Fiorano
7:47 Lamborghini Murcielago LP640 E-gear
7:50 BMW M3 E46 CSL
7:55 Ferrari F430 F1
7:56 Chevrolet Corvette C5 Z06
7:56 Porsche 996 Turbo
7:56 Ferrari 360 Challenge Stradale
7:59 Chevrolet Corvette C6 Z51
7:59 Porsche 997 Carrera S
7:59 Nissan Skyline GT-R R33 (Without speed limiter)
7:59 Dodge Viper SRT-10
7:59 Subaru Impreza Sti Spec-C
8:02 Mercedes CLK 63 AMG - Black Series
8:03 Aston Martin V8 Vantage (2005)
8:05 BMW M3 E92
8:07 BMW Z8 E52
8:09 Audi RS4
8:09 BMW M6 E63 (limited to 259 km/h)
8:10 Dodge Viper GTS
8:22 Chevrolet Cobalt SS 2008 2.0 Turbo
Some of these cars were only ran once where others were ran many times in various conditions to attain a best time. So, some of the cars may be able to turn a much better lap than what is listed here.
