Why my innertube is so big

Question

So my old tyre had markings 32-622 and 700x32c. I bought new tyre with those specs and that is fine. It fits perfectly on the rim.
But I bought inner tube with those specs and it seem it is way to big for the rim / tyre. I'm a missing something? What is the correct size inner tube for this tyre?

Michael · Accepted Answer

The sizes match, so according to the manufacturers you are on the safe side.
It’s not uncommon for tubes to be slightly too “long” (i.e. have a wider diameter). Maybe it’s because this tube also fits 635mm wheels and not just your 622mm.
Just try to “distribute” the excess length, so you don’t have one big kink in a single place. In your photo it’s also not fully inside the tyre.

Vladimir F · Answer

Don't worry. Try taking a square piece of rubber. If you stretch it in one direction, it will naturally try to become narrower in the other direction. When you pump your tyre, it will fit well. Also, a part of the tube is then farther from the rim – where the diameter is larger.

Answered by Vladimir F on June 25, 2021

Why my innertube is so big

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