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  1. #1
    qxl
    qxl is offline
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    Fitting the right size inner tube

    Hi there, I have just started to commute to work. Rather I should say I attempted to, got a puncture after the first 5 miles which I couldn't fix and had to call for rescue.

    To preven this happening again I am replacing my cheap and chearful tyres with some Specialized All Condition Armidillo Elite's (700x23c) at the same time I purchased a new set of inner tubes Specialized 700x20/28. However when I have come to fit the inner tubes they seem bigger than wheel rim.

    When I emailed the seller they told me they where the right ones.

    So basically what I wanted to know if this is actually the case, as I don't want to fit them and then get stranded half way into my 11 mile commute.

    Cheers

  2. #2
    not a role model JeffS's Avatar
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    They'll be fine, the larger size just makes them more difficult to get installed without pinch-flatting.

    I often run a size smaller for this reason - something like an 18/23 - not a size Specialized makes. I think they do have a 18/25, but it's in a lightweight tube, not necessarily what you want for the commute.

  3. #3
    Senior Member
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    ...and make sure they're properly inflated (which you check using a gauge!) to avoid one of the most common kind of flats, a pinch flat caused not by road debris but by underinflation.

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