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Commuting Bicycle commuting is easier than you think, before you know it, you'll be hooked. Learn the tips, hints, equipment, safety requirements for safely riding your bike to work.

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Old 07-31-08, 08:22 AM   #1
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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.

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Old 07-31-08, 08:30 AM   #2
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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.
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Old 07-31-08, 08:33 AM   #3
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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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