inner tube size crossover

Discussion in 'Bicycle Mechanics and Repairs' started by Abitrary, 5 Feb 2008.

  1. Abitrary

    Abitrary New Member

    Just looking at buying a pack of specialised inner tubes for 28c tires on wiggle, and there is a choice of 20-28c, and 28-38c.

    I guessing that the larger size will be heavier, increasing rotating mass.

    Does anyone know of any downside to getting the smaller size, or does it not make a lot of difference?
  2. Buy the ones which fit your tyres Abi.
  3. Dave5N

    Dave5N Über Member

    Too clever for your own good. If you have 28 tyres, get 28 tubes.
  4. Steve Austin

    Steve Austin The Marmalade Kid

    get the smaller ones
  5. Blonde

    Blonde New Member

    Bury, Lancashire
    The smaller ones will fit a 28c tyre if they are labelled as 20-28c. Don't get the larger ones, because they will be a lot harder to fit inside the tyres (too wide) and you'll risk puncuring/damaging them whilst fitting. A few years ago, on a ride, I 'borrowed' someone else's inner tube having already had two punctures and got through both of my spares and wondered why I had so much trouble fitting it - before I discovered that it was for 28-35c tyres. I had 28s.
  6. Before I changed my Sirrus to 25c's it had 28c tyres and I preferred the narrower tubes as they were easier to change.
  7. 4F

    4F Active member of Helmets Are Sh*t Lobby

    Get the 20 - 28, they will be easier to fit.
  8. hubgearfreak

    hubgearfreak Über Member

    get the bigger size.

    they'll be stretched less inside the outer, so if ever a thorn did go through the outer, you've got more stretch left to stretch, and a thicker wall thickness in the tube

    have you weighed each one? i'll bet that there's very, very little difference in it

    if you like p***t***s ignore me:eek:
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