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Thread: 700c tires

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    700c tires

    If a bike comes with 700x 28c tires what is the largest tire you could put on the wheel?

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    we be rollin' hybridbkrdr's Avatar
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    There's a chart on sheldonbrown.com for safe tire sizes. In any case, if you're sometimes lazy like me, you could cut a piece of cardboard to measure the outside width of the rim. Then you can deduct 4 or 5mm to estimate the inside width and look at the chart.
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    Senior Member wolfchild's Avatar
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    It all depends on how much clearence you have in your frame and fork and brake calipers(rim brakes).

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    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by humantorch39 View Post
    If a bike comes with 700x 28c tires what is the largest tire you could put on the wheel?
    On the wheel by itself, you could put up to a 700 x 60mm tire: http://www.universalcycles.com/shopp...s.php?id=16624 , but it would take a very special bike to accommodate a tire that big. As others said, the limitation is usually the clearance of the frame and fork.
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    Quote Originally Posted by Jeff Wills View Post
    On the wheel by itself, you could put up to a 700 x 60mm tire: http://www.universalcycles.com/shopp...s.php?id=16624 , but it would take a very special bike to accommodate a tire that big. As others said, the limitation is usually the clearance of the frame and fork.
    Agreed. I just had some 38mm tires on a bike/wheel that originally had 23mm. That was as wide as I could go without running into a clearance problem with the chainstays. Check how much clearance you have with the 28 mm tires at the fork and chain/seat stays and at the brakes (if calipers). That should give an indication of about how wide a tire you can use without having it rub anywhere. Every extra 2 mm of tire width will reduce the clearance on each side by about 1 mm.

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