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Wheels and tyres

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  • 28-11-2006 1:03pm
    #1
    junii
    Closed Accounts Posts: 600 ✭✭✭


    Hi,
    What is the story regarding tyre sizes and numbers on wheels.

    eg. a wheel that says 20h and a tyre that says 700x23. Will that tyre work fine on that wheel.

    And in a wheelset could one wheel be a 20h and another, say the back one be 24h?


    One last thing: If you bought a Michelin pro race tyre would there be a tube with it?


Comments

  • Options
    #2
    Morgan
    Registered Users Posts: 2,481 ✭✭✭Morgan


    The "h" stands for holes - i.e. the number of spoke holes in the rim (and the number of spokes in the wheel obviously). There's no relation to tyres size.

    The wheel will be wither 700c (road standard) or 26" (mtb standard) in most cases (there are other sizes out there). So, if you're looking at a road wheel then your tyre will most likely fit.

    The tyre won't come with a tube unless it's explicitly stated somewhere.


  • Options
    #3
    milod
    Closed Accounts Posts: 757 ✭✭✭milod


    Remember also to take the rim width into account, and also the fork/frame widths.

    There may be some difference in the width of rims fitted on hybrid and road racing bikes. Assuming you're not talking about a mountain bike here, you'll have some variation of 700C (622mm) wheel as Morgan said.

    Then depending on the width of your rims, you can fit anything from a super skinny 700X18C, right up to a fat 700 x 38C - but before you settle on anything too wide, ensure that your frame/braking system is designed to take a fatter tyre (hybrids will generally allow fatter tyres while road bikes won't)

    Check out http://sheldonbrown.com/tire-sizing.html#width for rim v. tyre width advice.


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