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  1. #1
    Senior Member StevePGN10's Avatar
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    What Tire for a Smooth 27" Rim?

    I just had two tubes blow in my face. I attributed the first one to the really trashed condition of the old tire that came on the bike. I was trying to confirm that the bike it was on would work OK permanently mounted on a trainer. I figured the fabric and rubber separated from the bead, allowed the tube to come out and blew out. I removed a tire and tube from another 27 x 1 1/4 rim that I knew have worked flawlessly for over a year. I'll be damned if it didn't blow up in my face as I mounted the bike onto the trainer, I could see the tire come out of the rim and the tube blewout. That's when I decided to investigate. I had previously checked that the rim liner was intact, no spokes were sticking out, and no debris was sticking in the rim. I had a dim memory of reading about smooth sided rims that have no means of seating the bead on a tire, and that is what this thing is. It is an old Campy rim and hub. It is otherwise unmarked as to size. The original tire was marked 630/ 27 x 1 1/4.

    What type of tire is required to use with a beadless rim? I searched Sheldon's site and the BF archive, but they seem silent on the subject.

    Thanks for your help, and speak loudly when you respond, I seem to be having difficulty hearing just now.

    Regards,
    Steve

  2. #2
    Senior Member
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    Most wire-bead tires will work; Kevlar bead/folding tires will usually not. But even with wire-bead tires, you're likely best not to go above 85-ish PSI.

    Neal

  3. #3
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    +1 Wire bead and modest PSI is what is required when you have a rim that lacks a hook.

  4. #4
    DRF aka Thrifty Bill wrk101's Avatar
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    +2 Wire bead, moderate pressure. I have been picking up low end wire bead tires from Niagara for less than $6.

  5. #5
    Crank photostudent's Avatar
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    The wire beaded tires from Performance bike seem to fit a bit tighter than the ones from Niagara, (I use both), but cost a couple bucks more.
    "I'm only going to buy one more old 10 speed bike..."

  6. #6
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    Install tire & tube, manually pump just a little air at a time , stopping to check that tire is seated evenly around on BOTH sides. Continue til you get to about #75. Examine all around on both sides to make sure it is evenly seated.

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