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700 x 18/20 tubes for 700 x 23 tire, problem?(5 posts)

700 x 18/20 tubes for 700 x 23 tire, problem?Uprwstsdr
Jul 29, 2002 6:56 AM
I was buying some gear and clothes, ask for tubes and didn't pay attention at the shop. Got home and noticed that the tubes were 700 x 18/20. I have Vittorio Open Corsa TT tires 700 x 23. Are these tubes ok or should I exchange them?
Yes to both.Eager Beagle
Jul 29, 2002 7:23 AM
They will be fine, just stretched a tiny little bit thinner than the norm. I run the 23s on 25 with no probs at all, and even have some 23's on a 28 cross at the moment.

That being said, if you don't need them in a hurry, take them back and change them anyway, to be sure.
I've had undersize tubes leak at the valve seam.Exchange themnmPaul
Jul 29, 2002 7:31 AM
I've only bought two tube sizes for years; no troublecory
Jul 29, 2002 7:43 AM
We used to have 13 bikes in the family (down to seven now), with tires from 700x19-40 on the roadies and 26x1.25-2.3 on the MBs. For simplicity, I bought only 700x20 road tubes and 26x1.5 MB tubes for about 10 years. I never had a problem I could trace to that. They stretch to fit
Thank you all, they shall be exchanged this weekend.Uprwstsdr
Jul 29, 2002 11:48 AM