Thanks guys!
The reason for asking was, I just didn't know what would work. I've been staring at the superbike too long.
Throwing a 180 on the back took away some of the chain clearance I had. Then Trussdude offered me a 190 H2 Michelin for the back, I couldn't see it fiting on the 5.5 and clearing the chain. So I gave it back to him. I chatted with Fred Renz and purchased a set of Mags with the rear being a 5.75. So I'm happy and good to go.
I'm going to stick with the 180 as far as tire size goes, unless I can squeeze something a bit bigger in, later on without it cleaning the chain lube off the chain for me.
