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Tyre sizes

Old 05-03-20, 10:36 AM
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Tyre sizes

Iíve just realised Iíve purchased some 700x42c tires to replace my current 700x45c ones. Will they still fit?
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Old 05-03-20, 10:57 AM
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Almost for sure, yes.

Going down a little in size is only a problem if your tire is too narrow for the rim. That won't be a problem here; it's more of an issue if you try to put 25mm tires on a rim designed for 45mm tires.

There's a tire sizing chart here: Sheldon Brown on tire sizing.

I'm sure you'll find you are in the range.
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