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  1. #1
    Senior Member
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    What Size Wheels do I have?

    What is the standard size road bike wheel? is it 650 or 700c This is a serious question. I have someone selling me 650c Open Pro wheels ... and I'm thinking to myself, this is the size I need, right?

  2. #2
    Solo Rider, always DFL
    Join Date
    Jun 2006
    Location
    Beacon, NY
    My Bikes
    Cannondale T800, Schwinn Voyageur
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    650c is probably NOT the size you need, unless it's a very small framed bike (or a tri bike). 700c is the size of choice for road bikes except for triathletes and very small riders.

    The bead seat diameter of a 700c wheel is 622 millimeters, while the bead seat diameter of a 650c wheel (there are three different "650" wheel sizes, but C is the more/most common AFAIK) is 571 ,millimeters. Make sure before you buy that you have a bike for 650c to use these wheels.

  3. #3
    Senior Member Steev's Avatar
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    Jul 2005
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    Backwoods of Ontario
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    Look at the tires on your bike now. The size is always printed on the sidewalls.

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