Finally got around to editing this track day from back in October, where I set a PB on 200tw tires with a 1:19, which I am pretty proud of. I think if I work on my consistency and try some different lines I could get it down a bit more, but on these RT660's you've only got 2-3 laps tops for your hero run, because after that they get too hot and your times will slow.

That said they are great 200tw tires, though they only ended up lasting me 4 track days. Details:

Track: Motorsports Ranch Cresson 1.7 CCW
Car: 2020 ZL1 1LE (AWE Catback, RotoFab CAI, SPL Rear Toe Links)
Tire: Falken RT660 200tw
Best Time: 1:19.982

Lap Times (All times from race transponder, not GPS):
0:00 Lap 1 - 1:20.325
1:24 Lap 2 - 1:19.982 (Best!)
2:44 Lap 3 - 1:20.688
4:05 Lap 4 - 1:22.532
5:23 Lap 5 - 1:24.989
6:53 Lap 6 - 1:22.419 
8:10 Lap 7 - 1:22.093
9:38 Lap 8 - 1:24.071
11:02 Lap 9 - 1:21.297 (Final Lap)