FZR1000 Speedo Gear??

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I currently have a speedo gear from an FZR600 installed, but I am thinking about going to a 120/65-17 rather than a 120/60-17. I used the tire diameter calculator and found that the FZR1000 front wheel tire combo diameter is the same as what a 120/65-17 would be. The speedo gear from the FZR1000 looks exactly the same, at least from what I can tell from the pics on ebay.
 
Cool, thanks for the info Sean. Pirelli has a 190/55-17 tire that I am going to try, but they don't make a 120/60-17 in the Diablo Corsa III, so my only choice is a 120/65 or 70 - 17. The 190/55-17 rear should get me much closer to the stock height. The Pirellis seem to run narrower, or more true to their stamped rating as far as width, so I hope it will fit.
 
Cool, thanks for the info Sean. Pirelli has a 190/55-17 tire that I am going to try, but they don't make a 120/60-17 in the Diablo Corsa III, so my only choice is a 120/65 or 70 - 17. The 190/55-17 rear should get me much closer to the stock height. The Pirellis seem to run narrower, or more true to their stamped rating as far as width, so I hope it will fit.
Also Dunlop makes that "untypical" sizes.
But mostly they're hard tyres and designed for Hardleys.
My friend use to run with 200/55R18 designed for Hardley.
It was not a good choice.

Curently im runnig with 17's and 190/50 at rear an 120/70 at the front. I didnt wanna make life more dificult
and keep changing the speedo gear ratio and i bought electronic speedo.

190/50R17 is about 5% smaller then stock.
You may check the Motorcycle speed rpm calculator in the links section.
 
Also Dunlop makes that "untypical" sizes.
But mostly they're hard tyres and designed for Hardleys.
My friend use to run with 200/55R18 designed for Hardley.
It was not a good choice.

Curently im runnig with 17's and 190/50 at rear an 120/70 at the front. I didnt wanna make life more dificult
and keep changing the speedo gear ratio and i bought electronic speedo.

190/50R17 is about 5% smaller then stock.
You may check the Motorcycle speed rpm calculator in the links section.


What brand of tires are you running? Is your swingarm stock? Did you have to do anything to get the 190 to fit, i.e. washer swap or something? What kind of speedo did you end up getting? I currently have the Michelin Pilot Road 2s on the bike. When I look at the specs of the 180/55-17 on a 5.5" wheel, it comes out to 189mm as the measured inflated width. I have gotten a brochure from Pirelli that shows the 190/55-17 as being 189mm on a 6" wheel. At least from what I have read, it seems that the Pirelli 190 is actually the same width as the Michelin 180 that I have on the bike now, maybe even a little less when mounted on a 5.5" wheel. So I am hoping it will be narrow enough.
 
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