Thread: Using undersize tubes ?
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Old 04-22-15 | 05:32 PM
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I-Like-To-Bike
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From: Burlington Iowa

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Originally Posted by kickstart
Schwalbe shows the size range each size of tube is suitable for. Bicycle Tubes | Schwalbe North America
I have been using AV17 tubes from Schwalbe for years in the U.S. with no problem and seldom (maybe once every two weeks) add any air. Previously in Germany I used tubes with Dunlop valves that covered a wide range of sizes (about 28-47mm) in my 622-47mm tires, also with no problems at all.
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