190 on a stock 900RR? - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 27 Old 04-16-2008, 8:23 PM Thread Starter
 
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190 on a stock 900RR?

Probably a stupid question but is it possible without problem and modification to put a 190 tire on a stock 99' CBR900RR? Here's the deal, I'm low on cash and have an excess of 190 tires from scrapped hayabusa's around, will these tires work on my fireblade?
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post #2 of 27 Old 04-16-2008, 8:26 PM
 
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Re: 190 on a stock 900RR?

You should have no problem, I put a 6 inch wide wheel and run 190's on mine with no rub at all.
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post #3 of 27 Old 04-16-2008, 8:42 PM Thread Starter
 
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Re: 190 on a stock 900RR?

so can I just change the rubber onto my rim, or will I have to change the entire assembly?
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post #4 of 27 Old 04-16-2008, 8:42 PM
 
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Re: 190 on a stock 900RR?

Just tire will do. No problem.
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post #5 of 27 Old 04-16-2008, 8:44 PM Thread Starter
 
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Re: 190 on a stock 900RR?

awsome that means I've got years worth of rubber kicking around then if my brother doesn't burn them all up on his busa's before I can get to them.....
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post #6 of 27 Old 04-16-2008, 8:50 PM
 
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Re: 190 on a stock 900RR?

Thats cool.
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post #7 of 27 Old 04-16-2008, 11:48 PM
 
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Re: 190 on a stock 900RR?

Obviously check the side clearance, and don't forget the tire will expand about 1/8 inch at higher speeds, so also check that it won't rub if it expands.
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post #8 of 27 Old 04-17-2008, 12:00 AM
 
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Re: 190 on a stock 900RR?

The tire will fit fine on the wheel but I have heard that the stock wheel is to skinny for the tire and your tire will bow out in the middle and cause slightly worse handling....Again, that is all hear say. I have never put anything bigger than stock on my so I can't say from experience. But if you put a 190 on let us know how it feels in the twisties compared to your stocker.
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post #9 of 27 Old 04-17-2008, 6:45 AM
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Re: 190 on a stock 900RR?

I fitted a Bridgestone 020 dual compound 190/50/17. I felt no bad difference to the 180/55/17 that was on before hand. I've had the bike a couple of times over 250kph and it doesn't scrape anywhere. Around the twisty's even two up I've scraped my toes and the rear feels planted.
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post #10 of 27 Old 04-17-2008, 11:39 AM
 
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Re: 190 on a stock 900RR?

Want to sell any of those 190s? Im in great need of a rear tire but im trying to hang out find a good deal on a slightly used one.
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post #11 of 27 Old 04-18-2008, 8:19 AM
 
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Re: 190 on a stock 900RR?

Sorry to pour cold water on this Gargoyle, if it works for you then go for it, but..

My rr-n had a 190 on it when I bought it. Later I swapped it out for a 180. With that 190 the bike was very jittery on high speed sweepers and a real handful at low speeds round slow bends/roundabouts and wotnot. Also on removal i found a nice big groove where it had been rubbing against the hugger (via expansion at higher speeds as per skater's comment).

A new 180 transformed the bike from a tank slappy happy thing to a pretty decent ride. This is not an entirely fair comparison as that 190 was showing threads and leaking air by the time I got round to changing it. But I stick with 180's now, I still ride them way past they're wear limits (being part scottish and having an awful lot of miles to cover) but even riding them till they're ready to drop off I've never had the sort of handling issues I experienced on the 190.

Could also have been that the profile of that rear didn't play nicely with what I had on the front. That is another aspect of this, so you may be just fine or you may notice adverse effects. I'd say give it a go, and see how it feels - sounds like you stand to save a heap of tyre pennies if it works out.
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post #12 of 27 Old 04-18-2008, 8:24 AM
 
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Re: 190 on a stock 900RR?

Quote:
Originally Posted by hcstreetriding View Post
Want to sell any of those 190s? Im in great need of a rear tire but im trying to hang out find a good deal on a slightly used one.
hc, do you have any racetech shops/clubs near you? if the techs are racers or supporting racers they should have access to plenty of barely scrubbed in rubber. if you don't mind the lack of chicken strips you can often pick up those barely used tyres for half the price of a new set.

just a thought...
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post #13 of 27 Old 04-19-2008, 10:36 PM
 
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Re: 190 on a stock 900RR?

Hey road rubber thats a good thought, never even crossed my mind, ill look into that im not too far from a track actually, i dont care if they are all only 50% left, for the right price it would be worth it. Plus, im a chicken so i dont get into the chicken strip area much, all would be well for me. Thanks for the thought

Last edited by hcstreetriding; 04-19-2008 at 10:36 PM. Reason: forgot
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post #14 of 27 Old 04-20-2008, 4:18 AM
 
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Re: 190 on a stock 900RR?

Quote:
Originally Posted by 89ls1 View Post
The tire will fit fine on the wheel but I have heard that the stock wheel is to skinny for the tire and your tire will bow out in the middle and cause slightly worse handling....Again, that is all hear say.
It's not hear say.

It's fact. A 190 on a 5.5" rim is an incorrect fitment which will negatively affect handling. I would never do it, not even if you gave me a free, brand new 190 Pilot Power!

Choosing the right tire size for your motorcycle rims - Sport Rider

We have enough things to worry about that we can't control when riding....why add to the risks? Why someone would deliberately change the dynamics of the bike (to its detriment) with a non-specified tire is beyond me.

That's just nuts.
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post #15 of 27 Old 04-20-2008, 9:32 PM
 
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Re: 190 on a stock 900RR?

Quote:
Originally Posted by Sime View Post
It's not hear say.

It's fact. A 190 on a 5.5" rim is an incorrect fitment which will negatively affect handling. I would never do it, not even if you gave me a free, brand new 190 Pilot Power!

Choosing the right tire size for your motorcycle rims - Sport Rider

We have enough things to worry about that we can't control when riding....why add to the risks? Why someone would deliberately change the dynamics of the bike (to its detriment) with a non-specified tire is beyond me.

That's just nuts.
I'll have to disagree with you on that, Sime. Here in the club racing scene, at least half the racers on 600s (which all come w/ 5.5" wheels) are using 190 tires. Dunlop for example, only makes there 209GP and now 211 race tires in 190/55 tire sizes... no 180s. I recently switched to Bridgestones 002 Pros this last year and have run both the 180 and 190. I've had to change my geometry when going to the 190 on my R6, but it works well. The 180 will be easier to spin up on the corners and one may not be able to get as much corner speed or grip, but the lighter 180 tire gives you a couple more hp down the straights.

Personally, I wouldn't run a 190/50 street tire as I don't lean it over that much on the street and you're just sucking up gas, but if you have a lot of excess 190s and it's not rubbing against anything, why not?
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