Time to put the beautiful Barber Motorsports Park on the leader board...
2007 Z4 M Coupe (S54 stock motor).
Hankook Z214 275/40/17 square setup
Time 1:38.5
Video of 3 laps. Contrast on the video rendered dark in the cockpit. Second lap was 1:38.5. 3rd lap was on a predictive 1:38.3 until a P car blew my entry on the front straight!
https://youtu.be/p8CpmxZBoKM