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  1. #1
    Junior Member
    Join Date
    Apr 2012
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    Vancouver, BC
    My Bikes
    Leader736R, Leader516H (road conversion), Peugeot PB12, Peugeot ??, Raliegh Sprite, Norco Torrent, Norco Shore VPS, 1937 CCM
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    28" tires/wheels not 28" tires/wheels?

    Hey C&V Gang,

    Working on my grandfather's 1937 CCM today, trued the front wheel and started lacing the rear. Grabbed the new 28 x 1 1/2 tire and put it on the rim, hmmm this fits really loosely. Try to seat it onto the bead but no way, these new tires appear to be at least a 1/4" larger in diameter than the rim's total diameter. I look at the old tires to make sure that I didn't make a mistake, nope, 28 x 1 1/2". What gives here?

    Are 28" tires and/or wheels from 75 years ago not the same diameter as they are now? Did the measuring tapes we use today grow along with our waists?

    Anyone know where I can get some "28" tires for a 1937 CCM?

    Any wisdom would be appreciated.
    Darren

  2. #2
    26 tpi nut. sailorbenjamin's Avatar
    Join Date
    Mar 2008
    Location
    Rhode Island (an obscure suburb of Connecticut)
    My Bikes
    one of each
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    Here, read this and then go get some fat 700s;
    http://sheldonbrown.com/tire-sizing.html
    I have spoken.

  3. #3
    Junior Member
    Join Date
    Apr 2012
    Location
    Vancouver, BC
    My Bikes
    Leader736R, Leader516H (road conversion), Peugeot PB12, Peugeot ??, Raliegh Sprite, Norco Torrent, Norco Shore VPS, 1937 CCM
    Posts
    8
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    Thanks Sailorbenjamin, I should have checked Sheldon Brown's site before asking. Will have to give that a try

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