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Trainer Tire

Old 12-13-18, 06:15 PM
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bobwysiwyg
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Trainer Tire

Considering using my gravel/adventure/whatever bike on an indoor trainer. I'd like to use a trainer tire, but Googling around seems to suggest they cater to road bikers. All I found were 23-25mm tires. Does anyone make on 38mms? Might work with a 35mms, but haven't found one of them either.
​​​​
Thanks in advance.
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Old 12-13-18, 06:55 PM
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Originally Posted by bobwysiwyg
Considering using my gravel/adventure/whatever bike on an indoor trainer. I'd like to use a trainer tire, but Googling around seems to suggest they cater to road bikers. All I found were 23-25mm tires. Does anyone make on 38mms? Might work with a 35mms, but haven't found one of them either.
​​​​
Thanks in advance.
Why do you need your trainer tire to be so big? What's the internal width of your rear rim?
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Old 12-13-18, 07:42 PM
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Originally Posted by HTupolev
Why do you need your trainer tire to be so big? What's the internal width of your rear rim?
Haven't really measured it actually. The bike originally had 42mm knobbies as I recall. I changed them to 38mm's with a smoother tread so just trying to come close in terms of width.
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Old 12-13-18, 08:03 PM
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Originally Posted by bobwysiwyg
Haven't really measured it actually. The bike originally had 42mm knobbies as I recall. I changed them to 38mm's with a smoother tread so just trying to come close in terms of width.
But why?
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Old 12-13-18, 08:10 PM
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Originally Posted by shoota
But why?
Why what? Why I didn't measure wheel/rim or why I'm trying to match tire width?
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Old 12-13-18, 08:56 PM
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The size of the tire is irrelevant on a trainer as the height of the wheel axle relative to the floor is always the same and the resistance unit is what is adjusted to accommodate tire size. You gain nothing from using a larger tire vs a skinny one. Get yourself a super cheap wheel to use strictly.as trainer wheel with a normal trainer tire and you're set.
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Old 12-13-18, 09:12 PM
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Originally Posted by bobwysiwyg
Why what? Why I didn't measure wheel/rim or why I'm trying to match tire width?
Why are you trying to match tire width?

If your rim isn't too wide to safely mount a 25mm tire, why not just mount a 25mm tire?
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Old 12-13-18, 11:10 PM
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Continental Ultra Sport II is cheap and available up to 700x32. The 700x25 has held up so well I use the same tire/wheel on both my Cycleops trainer and on the road.
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Old 12-14-18, 05:20 AM
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Thanks for the input and suggestions. I was operating under the assumption that the rim would be too wide since it originally had 40mm tires mounted.

Last edited by bobwysiwyg; 12-14-18 at 05:18 PM.
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Old 12-14-18, 01:35 PM
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Originally Posted by bobwysiwyg
Thanks for the input and suggestions. I was operating under the assumption that the rim would be too narrow since it originally had 40mm tires mounted.
The rim could be too wide to fit 25mm tires but regardless do you really want to be swapping tires back and forth?
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Old 12-14-18, 05:21 PM
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Originally Posted by gus6464
The rim could be too wide to fit 25mm tires but regardless do you really want to be swapping tires back and forth?
It would likely be on for 3-4 months. As far as outside, any rideable days would done on a Trek DS.
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Old 12-14-18, 05:36 PM
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I’d look for any appropriately wide tire with a smoothish tread. I have a road bike that lives on a trainer full time, and am on my third rear tire...first was the tire that came on the bike, a 23mm road tire, second was a 23/25 mm “trainer specific” tire...both lasted about 5k miles. For my third tire, I bought the cheapest house brand sale tire from Nashbar I could find, a 25mm city/commuter tire with thick rubber but a smooth tread...all signs point to it lasting 5k miles as well.
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