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Clydesdales/Athenas (200+ lb / 91+ kg) Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.

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Old 07-24-13, 12:24 PM   #1
bbeasley 
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Is it okay to run a 28-32mm tube in 23mm and 25mm tires?

Like the title reads. Thanks!
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Old 07-24-13, 02:14 PM   #2
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Yes, just make sure that none of the tube gets pinched between the rim and the tire bead when you install it. A wider tube makes this a bit more likely if you aren't careful.
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Old 07-24-13, 02:40 PM   #3
Bill Kapaun
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I wouldn't. Too easy to pinch. You may also end up with creases that will result in a weak spot. Likely not a problem unless you have to patch & reinflate the tube. I think it opens the door for unexpected future problems. For $5, get the right size.
Kind of depends on the degree too. Putting it in a 23mm tire would be much worse than a 25mm IMO.
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Old 07-25-13, 07:12 AM   #4
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In an emergency, if you could get it in there without pinching it, you'd probably be OK. If it isn't an emergency, I'd get the properly sized tube.
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Old 07-25-13, 09:06 AM   #5
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Quote:
Originally Posted by Myosmith View Post
In an emergency, if you could get it in there without pinching it, you'd probably be OK. If it isn't an emergency, I'd get the properly sized tube.
+1
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