Wow, another rigged test:

http://www.einszweidrei.de/bmw/m3e462005-1.htm

This car is fully optioned with 19" wheels as can be seen on the spec list on the link. It ran 0-160 in 11.0 & 0-200 in 17.6

The one that ran 16.8 had 18" wheels & very few options & was tested in cooler conditions.

I guess its beyond the realms of possibility because you say so.