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I bought a new inner tube and when I tried to inflate it, the tube got unevenly inflated (check picture). This is the first time I'm installing a tube by myself so I don't know if this is normal. Do you think this is this a production defect, or did I do something wrong while pumping the tube? Can I fix it by myself?

enter image description here

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    Normal. They are not designed to be inflated without a tire around them. Just use it. – andy256 Oct 24 '15 at 3:24
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    Yes you did something wrong. You are supposed to put the tube in the tire and mount it on the rim. – paparazzo Oct 24 '15 at 3:29
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    Yep, perfectly normal, if you over-inflate it that much. The tube is not designed to hold pressure by itself, and will rarely allow more than about 5psi without ballooning out like that. – Daniel R Hicks Oct 24 '15 at 3:57
  • Okay all great, thanks. Now can somebody put this as a proper answer instead of comments so that I accept it? – Andree Oct 24 '15 at 4:02
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Yes you did something wrong. You are supposed to put the tube in the tire and mount it on the rim.

If you inflate a balloon you will see similar behavior. After you have stretched a tube IN the tire the behavior outside the tire will change slightly.

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  • Andy you down voted. Why? – paparazzo Oct 24 '15 at 5:08
  • It's a duplicate. Surely you would know that. New users don't learn to use the site as it's supposed to work if senior users such as yourself feed contrary behaviour. – andy256 Oct 24 '15 at 6:52
  • @andy256 Feed contrary behavior? By that logic your first comment without marking as a duplicate feed contrary behavior. – paparazzo Oct 24 '15 at 10:46
  • A comment is not an answer. I was on my phone and not able to check for duplicates at the time. – andy256 Oct 24 '15 at 11:08
  • @andy256 Still a feed. Cheers. I hope the OP learned his/her lesson. – paparazzo Oct 24 '15 at 11:22

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