Setra Motorsport have build a supercharged E46 M3 to obliterate the Nürburgring, and they succeeded. To put it into perspective these times below are from fastest.com.
997 Porsche 911 GT2 RS (7:18)
Ferrari 488 GTB (7:21)
Pagani Zonda F Clubsport (7:24.65)
KTM X Bow R (7:25)
BMW M4 GTS (7:27.88)
Its worth mentioning this was done in a manual car, which means there is plenty of awesome heel and toe footwork also.
And the Ferrari