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Old 2018-05-29, 11:36 PM   #1
Join Date: Jan 2017
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Sorry if itís a dumb question

Can I use a 27.5x2.125 tube in my 27.5x3 tire in a pinch? I donít do any crazy stuff just light trails and if I can do I put in the same amount of air? I only want to use this if I happen to get a flat...
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Old 2018-05-29, 11:50 PM   #2
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In my experience, yes, it will work. Tube quality varies a lot, so buy a good one. (I've been running a 2.125 tube in my 3" tire for several years with no issues.) I use the same pressure as always. (Although this is kind of low, since this tire is ridden exclusively off road. Between 15 and 16 psi, typically.)
My opinion/experience only. As always, "your mileage may vary."
Good luck!
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Old 2018-05-30, 02:02 AM   #3
Uni Klein
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Tubes are pretty flexible when it comes to sizing. You should be fine but it wouldn't hurt to get the correct size.
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Old 2018-05-30, 04:14 AM   #4
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Not a dumb question at all, but not a great subject line for the future. The question itself would have been better.

3" tubes can be heavy, especially if they're made to be puncture resistant. So I bet a lot of people use skinnier tubes and carry patch kits.
John Foss

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Old 2018-05-30, 04:47 AM   #5
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People stretch 29" tubes onto 36" wheels. Tubes are stretchy.
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dumb, itís, question

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