Yes Brad there are plenty of rules regarding tires. And it changes from club to club. The first thing you should do is find out who you would be running with the majority of the time and also other events you would like to attend. Many times your tire rules are based on the class where your classifies. For example, if you raced with the SCCA, you would be classified as c-prepared and you could run any tire you wanted with a minimum weight of 3200lb (over 5 liter) with a 50lb weight penalty for rims larger than 16" and another 50lb weight penalty for wider than 10". And you would be pontentially placed with other purpose built race cars (see John Sandberg's AAR 'cuda). If you go to a Goodguys event, it's run what ya brung but 200 treadwear rating. Carlisle is completely wide open.

As you can see lots of variables so before I could recommend you a tire you would need to figure out what rules you are adhering to.

Kind of like circle track racing, eh? Rules change per track.