2015 Camero Z28 Solo Class
Doing a search of the rulebook using "Camaro Z28", I found that with the DOT-R tires, the 2014-15 Z28 is in Super Street R (SSR). page 201 of the latest version, it is at
at this time. So the change in class for those tires is to bump a bunch of cars that come with available DOT-R's to the same top class. I haven't reviewed the rules but as it's a Street class otherwise, all the same restrictions would apply. This at least lets you run with a recognized class at both Region and National level. Hope this helps!