Inner tube - is size that important?

Discussion in 'Beginners' started by Danny, 25 Aug 2007.

  1. Danny

    Danny Legendary Member

    Realise this may be a stupid question, but here goes.

    I normally ride on 700c x 23mm tyres, but have just fitted some 28mm tyres as I am off touring next week.

    I think the inner tubes I have on the bike are for 23-25mm tyres. Is there any reasons why I shouldn't use them with my new 28mm tyres (I have inflated them and they seem to be fine).
  2. Mr Phoebus

    Mr Phoebus New Member

    They'll be fine, they'll just lose pressure over time a bit easier than you fitting wider tubes.
  3. ufkacbln

    ufkacbln Guest

    It's a cross between good practice and practicality.

    Pumping a 23 mm tyre to 28 mm is not a problem, in fact if you look at some tubes they are designed over a greater range (the Schwalbe SV15 is rated 18 - 28)

    I have successfully (in an emergency) run tubes way out of spec (26" in 700c tyres)
  4. peejay78

    peejay78 Well-Known Member

    i ran a 23 in 32 once to get home.
  5. OP

    Danny Legendary Member

    York was only after I fitted the bigger tyres, and spent 30 mins adjusting my mud guards so they didn't rub, that it I started wondering about the inner tubes. Glad I don't have to start again!
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