This was last weekend at the most recent NASA Rocky Mountain track event. The track is in La Junta, CO, at the airport and is 1.5 miles long with 7 turns. I was in HPDE3 with 4 other cars (3 C5 Z06s and an '84 Dodge Charger race car). They all had race tires, but I started out on my 255/40-17 Falken Azeni RT-615 with the intent of putting on my V710s for the 3rd and 4th sessions in the afternoon.
Your choice of 4 vid locations (all the same but different quality):
The vid shows us in the 1st session learning the course for the first time. You can see many mistakes and can see how I was really struggling with the street tires, since I am used to racing on my V710s, so I was going too hot into most of the turns. When I pass the Charger, he screwed up and moved to the right instead of the left, so I had to slow down and wait for him to move left and signal before I could pass right. When I catch up to the yellow and silver Vettes, the silver guy also screwed by giving the pit signal instead of the pass signal, so that is why I slowed down there, too. The vid is chopped so that it doesn't show all the boring footage of me by myself, so that's why it jumps at certain places - not perfect editing.
The last lap of the vid was my fastest lap of 58.4s. The fastest lap of the weekend was a 57.4s by a World Speed Challenge SRT-4 (Chronohunter has raced/beaten him here locally), 2nd was an American Iron Z28 that ran 58.0s, then 3rd was the silver Z06 in this vid that I passed but driven by the father of the two in TTU - he dropped down to 57.8 on day 2. I never got to put on my V710s, because I blew out a brake pad that then killed my rotor with deep grooves, so I had to go home. I believe that I could have maybe surpassed the 57.4 by the SRT-4 - there's no guarantee, but it would have been fun trying, especially since I put down that 58.4 on my first session. The SRT-4 only did one session, so it's possible he could have eventually done better, too, had he kept racing.
Here's some pics: