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Thread: tyre size?

  1. #1
    Senior Member simongrant's Avatar
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    tyre size?

    Hi group,
    I currently have 26x1 3/8 tyres on my comfort bike,does this mean all new tyres i put on have to be this same size?

    Regards

    Simon

  2. #2
    cab horn
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    They can differ in width, but they do need to be 26
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  3. #3
    Mr. Dopolina Bob Dopolina's Avatar
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    Quote Originally Posted by simongrant View Post
    Hi group,
    I currently have 26x1 3/8 tyres on my comfort bike,does this mean all new tyres i put on have to be this same size?

    Regards

    Simon
    Have a look on the tire for and ETRTO size. It will be a 2 digit number followed by a 3 digit number (47-559 or 23-622 for example). The first number is the width of the tire. This you can vary but is limited by the width of the rim (Sheldon's site has a good chart for this). The second number is the Bead Seat Diameter (where the tire hooks onto the rim). This number you must match exactly. No wiggle room here.

  4. #4
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    Make sure you look for the ETRTO size as there are two distinct sizes of 26x1 3/8 tires in addition to a 26x1.375 size tire. Bead seat diameters are 590 mm, 597 mm and 599 mms. Roger

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