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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Archive through October 10, 2016 » Alternative Rear Tire Sizes « Previous Next »

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Imotopilot
Posted on Wednesday, July 20, 2016 - 01:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Apologies if this horse has been previously beaten. Curious if I can run a 170/60-17 on my 07 Uly safely?

Thx
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Natexlh1000
Posted on Wednesday, July 20, 2016 - 02:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I wouldn't.
My X1 got a flat far from home one time and the only tire they could get their hands on was a 160 instead of the normal 170.
It was very easy to detect that something was wrong in the handling.
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Nillaice
Posted on Wednesday, July 20, 2016 - 05:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

that's a bit smaller than the 180/70-17 in both width and height.
running a 190 on the rear is a popular option and I think it makes a noticeable (good) change in the handling, so I'd imagine going the other way would make a noticeable (bad) change

... I've also run a car tire on the back and it really makes you have to muscle on the bars in order to turn
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Imotopilot
Posted on Wednesday, July 20, 2016 - 05:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nillaice, So you're running a 190 rear tire on your XB12X? Is it a 190/50?
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Etennuly
Posted on Wednesday, July 20, 2016 - 06:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You can also find differences in tires of the same numerical sizes. Carcass shape tread design all change handling characteristics.

Depending on you and what you do with it is what matters. If it is a good tire and it is all you got and the one you are replacing is gone to unsafe grounds, do what you need.

If it will mount correctly on the rim and you can learn how it handles and ride within those physical parameters, it is likely more safe than the tire you are taking off, right?
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Arry
Posted on Wednesday, July 20, 2016 - 07:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Stock rear is 180/55-17, so, a 170/60-17 is only about 3/8 of an inch narrower and probably real close in height. (?)
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Mark_weiss
Posted on Wednesday, July 20, 2016 - 08:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Running -10 should not be too bad. Handling will be a bit quicker but stability should not be significantly impacted. I had a GSXR that could run either 170 or 180. 170 handled better, 180 lasted longer.

Tires vary a bit anyway. I tried a 190/55 Dunlop Q2 and it rubbed the belt guard pretty significantly. Fortunately, it was the extended edge of the tread and was trimmable without impact on safety.
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Tribe29
Posted on Wednesday, July 20, 2016 - 10:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I ran a Metlzer Tourance 150/70 for a trip from Fairbanks to Prudhoe Bay. Didn't notice a performance or handling problem on that gravel road trip.
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Nillaice
Posted on Thursday, July 21, 2016 - 01:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

190/55
Flapper wheel on the angle grinder made quick work of the bit of rubber that was rubbing on the belt guard
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Dr_greg
Posted on Thursday, July 21, 2016 - 10:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I used to run Avon Distanzias, with a 160/60-17 rear. Worked fine...in fact it was my favorite tire on the '06 Uly.

--Doc
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Etennuly
Posted on Thursday, July 21, 2016 - 01:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hi Doc! Hope all is well!
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Imotopilot
Posted on Thursday, July 21, 2016 - 01:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Good to know info if in a pinch. Thanks again fellas!
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Dr_greg
Posted on Friday, July 22, 2016 - 11:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hi Doc! Hope all is well!

Yessir, you betcha. Just parted with Wotan ('13 GSw) at 66,000 miles and got a new bike. Link to a writeup soon.

--Doc

P.S. That 160/60 Avon Distanzia was the SM tread compound and had AMAZING grip on pavement.
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