There is a guy name John Bergret that sells used R-compounds. It is his business, and he is a good duy to deal with. He is in Illinois I think, but really does people a good deal. He sells good tires, not junk. I have ordered from him and ordered 4 tires in the past, and recieved 6 tires just beacuse I was a regular or whatever. He is just a nice guy that must have a big garage full of used race tires.