I was planning to attend HPDE at Thunderhill and found this:

http://www.thunderhill.com/school.html

I drove my s2k at Thunderhill before, is this specific to HPDE organized by Thunderhill or is it a new regulation? Any ideas?

 

I'm pretty sure they allow our car there. I've driven that track a couple of times and Speedventures has an event scheduled there in a couple of months. Sometimes track's have the official rules and a separate set of real rules. That way if they don't want to let a particular car on the track they can point to the offical rules but in reality they usually let cars on unless they're obviously unsafe. I'd call and ask.

 

The Thunderhill school no longer allows convertables w/o aftermarket roll bars. It only applies to their school, not other events.

Each event can set their own roll bar rules.

 

Actually I remember reading that the Thunderhill HPDE only allows convertibles with hardtops. It doesn't make much sense because I'm sure aftermarket rollover protection would be much better suited for a rollover situation than an aluminum hardtop.

 

I plan to talk to Shannon when I'm there w/ trackmasters. I'll get the offical rule from him.

I think by hardtops they mean closed top cars.