• Tyre popping off the rim question here
    Happened twice now
    First time I thought it was the cheapo tyre, so binned that and changed to Schwalbe ones, new tube, new rim tape
    Happened again, tube and tyre seem fine
    No apparent distortion to the rim wall, clincher edge seems uniform around the inner wall
    Rims are Weinmann 27x1 1/4, probably 1970’s-era, tyres at a modest 55/60psi
    Any ideas? I’m stumped :(

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