Kevin there is nothing stopping you from allowing silvercans in the class. Have the rules set with a specific brushless motor and speed control, and allow silvercans in the class, and then put pressure on anyone who is fast, to get the brushless combo. Ours sorts itself out, our Orca combo is slightly quicker than a silvercan, so people upgrade on their own.

I can see the allure of a spec tire, but for us locally, I see no reason, due to everyone who is quick, has landed on the same tire anyhow. Allowing open tires, allows the cheap racers to run whatever they can find.