I did not see your post before my last one and I am very surprised to see your comments. I know my own experience with these tires on the street has not been good, but admittedly they were not hot. I never trusted them long enough to get them hot. Seems like I recall back in the 70s that they tires were certified to race or something to that effect. However, several track guys have told me that rubber tech has passed them by and they could not be trusted. I know myself I have laid some pretty hard launches, went back to do another and was surprised to not see the last launch. Now that's hard rubber. Thanks for posting your experience, but I am waiting just the same. Or maybe it's just the caution that comes with age.
The other factor is driving 400 miles, beating your car on the track for a couple days, hoping it survives for the London show and autocross and then driving 400 miles (hopefully) home. I do hope you guys are able to offer it next year.
This is my first trip to London so I am looking forward to it and meeting all you fine people that have worked so hard to put this event on for us all!