Hey Guys, I feel like I have asked this before so i'm sorry. But I am doing ice racing this year, I just built a 110, and want to put smaller tires on the back of it. I know I will have to make an adapter for different wheel types. Im gonna run un-studded so what is a good size to use? It would be the same as those of you that race flat track. Any idea what size they might be? Thanks in advance.