Ended up running these 3 or 4 year old ZR1s. Did ok for the first pass. 14.680 @ 98.3 MPH and was not bad for these tires. Still a bit of traction problems but the track was good. Went for second run and over heated the tires and just became greasy. I also missed 2nd gear so that run was a waist. For the 3rd run I drove around the water box and just gave the tires a little push. This time they felt good so I was about to have a really good run. The lights came down the tree, I gave it a good shot at slipping the clutch and BOOM. The tires had a good bite and the trans did not like it. Left the diff, oil and a bunch of shinny parts on the track. So my first run get me all the trophies and that's a good night.