Fun track day with my 2013 BMW 135i doing Thunderhill East bypass. Practically, this is the first time tracking my 135i at Thunderhill East. The serpentine belt broke after 2 sessions at the last Thunderhill event.

This 2:07.02 lap is okay but 2 seconds off my "optimal lap" of 2:05.03 generated by Garmin Catalyst. With more seat time tracking this 135i at Thunderhill East, I think 2:03 is quite achievable. 

If you are interested in seeing more track videos with my 135i, 128i, Cayman S Sport and Spec Boxster, please hit Subscribe. I do one of two events per month, mostly NorCal tracks.

Next event will be at Sonoma Raceway with SpeedSF. Haven't decided which car yet. The Spec Boxster is a likely candidate for the next event.

Enjoy the video!