first post of my discussion thread...should i just copy/paste over from the build thread?
Well, I've probably seen at least 100 RZs with 17s!haha, by most of us, you mean you smoker?
there is no way myself or this engine/frame combination will be able to outride the two commonly available 18 tires, and besides i think a 180/55-17 on the rear of a ~40hp bike is just silly.