Tube Question?? Will It Fit??
05-30-15, 08:31 PM
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Tube Question?? Will It Fit??
My tires say 700 X 40. I have several new tubes that are 700 X 35-38. Will these be okay to use? It is a hybrid GT ZUM. Thanx
05-30-15, 10:34 PM
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A qualified yes. The tube will expand inside of your tire and fill the ACTUAL space the tire and rim combo create. A slightly smaller tube width might make this expansion a tad greater. But 2mm wider a tire isn't too much real difference. You could always compare the actual tube width between the old and the new tubes and make a judgment, then see how things fit up.
