Fully stock except brake fluids and pads, oldish OEM PS4S tires.

First time ever at Thunderhill, and getting right into learning the full 5-mile configuration. The lap was quite messy but happy to hit my goal of 3:25 by the last session. Optimal lap of the day was low 3:24.

Special thanks to Tommy (the passenger) who let me follow his M3 in an earlier session to show me the lines and rode along in the last session.