just curious.....i have a 93 cbrf2...and just wanted to know is it possible to go with a 190 for the back tire w/ the stock swing arm?

 

nope...dont think so

 

doubt a 180 would even fit - even if it did, it would handle like crap.

 

You don't want to put an 190 tire on a 5in rim. It goes on a 6in, you can squeeze it on a 5.5. Get a f3 or 900rr rim. There's how to's everywhere, just google it. It will probably take you to cbrworld. They may be one on here, I can't remember. It's not hard, you just get the f3 spacers and flip them both to the same side if I'm not mistaking. I know there is a caliper clearence issue and that's why you need the wheel offset a little to the left. Putting the big meat on a small rim looks stupid and handles terrible. Manufacture's spec tires to have a certain curve. That curve was engineered for handling purposes. Going up one doesn't hurt too bad but going from a 160 to a 190 is ubsurd.

 

A 180 will fit BUT the clearances are close. A 190 probably would rub. I run a 180/55 on my F3 (5" wheel) and have for over a year. Handles ok to me, never had any problems but I don't ride it on the track just the street sohandling issueswould depend on how you ride.