Hi guys,
Is the rear wheel a 5.5 inch? I could'nt find this info in the haynes manual and was currious as to the use of a 170 rear instead of a 180. I'm assuming this was the standard tire size of the time. Will a 180 fit without causing handling problems? Would love some advise from those in the know. thanks, Ed

 

Hi mate,What year is your cbr?mine is a '95 and it had a 180 section rear tyre on it when i bought it so thats
what i have stuck with and it handles fine although i believe standard is 170.......

 

The 90-91 1000F is 5.5 inches and uses a 120/70-17 tire. The earlier ones were narrower, but not sure about the later ones.

 

You are right and wrong...you obviously were thinking of the front when you typed that size...the OEM tire on the rear is a 170/60-17 only because back then the 180/55-17 was not as common, but a 180 will work just fine..

 

I guess the year would help..dooh! It is a 96. Thanks for the reply's guys.

 

The wheels have 5.5 inches since 90 all the way ubtil the bike was discontinued in the mid nineties, the early ones had 3 1/2" or 4" wheels I believe in the rear

 

Doh! (slaps top of head).

 

As already stated, the rear is a 5.5" since 1990, optimum width for a 180. It will rub the chain guard but it's plastic and will burn its clearance as required.

The 180 definitely turns heavier and will require moving your butt on the seat at even reasonable corner speeds if you're a light bar input rider (as all should really be). I use a 180 because it's the smallest available in the Pirelli Diablo Corsa, my preferred track tire, but would stay with the 170 if it was available. On the track the 180's fine as you're at speeds where you're moving your butt over anyway but it requires that much sooner than otherwise necessary on the street. JMO

BTW, mines a '90 that I've ridden for 122,000 miles, at least half of that extremely twisty mountain roads.