Username of car owner: 02rsxpilot
Track: Laguna Seca
Configuration: There's only one.
Lap Time: 1:51.73
Tires: Dunlop Direzza ZIIs 225/255
For kicks, I jumped in my dad's Porsche 997 CS for about 15 minutes at the end of the day and did a 1:52.94.
UPDATE:
Lap Time: 1:52.23
Tires: Bridgestone RE-760 Sport 225/245
Fairly happy to have gotten within .5 seconds of my previous best on true street tires. I was actually faster through the first half of the track but couldn't match the same speeds from T8-T11 (T9 especially) due to lack of overall grip compared to the ZIIs. M3 control arms (-2.0 camber all around) and RSFB inserts certainly contributed to narrowing the gap though. With a decent track tire (ZIIs/RE-71Rs or stickier), I think the car could go low 1:49 or even push into the 1:48s. Next time at this track I should have dedicated (and lighter) track wheels and stickier tires, so we will find out!