Stock M6 at 335Km/h - not sure if this was posted earlier
 

http://carrospt.blogspot.com/2006/02...at-335kmh.html

The car has the speed limiter turned off by the chiptuning company Vilauto
Competições from Portugal, so the 250km/h speed limit is easily passed by
this powerfull BMW engine with a 7 gear automatic gearbox by BMW.

The video is filmed in portuguese high ways and you can see the M6
"escaping" from a CBR1000RR and a Suzuki GSX-R 1000 at almost 340km/h( >
210mph).

The car is stock, only has the speed limiter turned off. So it's "only" 507
bhp making all that speed.