Rear tire is 180/55 it’s massive lol works good I will probably stick with it.I just ride street. Idk about your bike but mine has High compression pistons/ arrow pipe etc. will pull the wheel up at 70mphOk that makes sense, what size is your rear tire? The guy I bought mine from use to race it I guess so it has a 160 on the back. Was thinking of changing it to something bigger, 180 maybe?