Dan...who do you mean with "they"? Do you mean the Serpent guys who have done everything using their incompetence to screw up this initial GT year?...I reckon you mean them
Well we've started our own GT class accepting all brands using the basic rules of Roar / Ifmar with a restriction on engine, manifold, muffler and tyres.....Same brand, same type.

As far as the RTR series from serpent concerned after 1 year of races where nobody from serpent showed up or helped the class develop they are testing the huge caster problem to come to the conclusion it's the expensive tyres who have no grip. The good thing is they finally do something. Lets see what they will bring next year from an organisation and communication point of view.