With a broken wheel on my U1 classed 2015 Mustang I was out of options to get any points in class, until Stan Whitney offered up his 2022 GT500 for a few laps. Big thanks to Stan, as I always love driving his MISSILE of a car. 

Vorshlag has done a little work to this GT500, including the front splitter, and supplying a front seat bracket and MCS RR2 coilovers that came from ... my 2015 Mustang, recently rebuilt by MCS. This session also provided data that verified a hunch: the Vitour P1 isn't magic. It is just another 200TW tire. 

Stan ran in 2 earlier sessions on some well used (from 2024 SCCA TT Nats) 295mm Yokohama A052 tires on 20x12" wheels and ran a 1:17.754 lap. Then ran a 3rd session on these new P1s and slowed down 2 seconds. I was also 2 seconds off his earlier pace with the same P1 tires, and we're usually very close in lap times in the same car. 

My hunch is... maybe the P1's "non eligibility" in 2023 and 2024 gave it some mystique that maybe pushed it further up the 200TW tire ladder than it deserved. Stan has since tested the P1 at other tracks and it is off the mark there, and now has moved to a 325mm Nankang on 19" wheels and is faster still. So take everything you read about some new tire with a grain of salt. 

It is just a data point from 2 drivers, nothing that disproved your favorite tire. But after 5 years of driving on the A052 on 7 of my own cars, I have yet to see a faster 200TW tire. Cheers!