650B Conversion Tire Clearance Repository

What bike(s) have you converted to 650B? What tires fit?


Have you converted a bike? Comment below with the following and I will update the table:

  1. Make
  2. Model
  3. Year (or era)/serial number/distinguishing feature(s)/color
  4. Frame size
  5. Largest 650B tire that fit
  6. Any 650B tire(s) that you tried that didn’t fit
  7. Brakes used in conversion
  8. Other comments

5 comments

  1. Nishiki Comp II 1986 – 56cm – 38mm Col de la Vie, 38mm Soma B Side fit and 42mm Hetre 42mm fit. Tektro R559 brakes.

    Torelli Columbus lugged steel frame, possibly from Cinelli Corsa factory, approx 1983-4 – 57cm – 38mm Col de la Vie and Soma B Side fit, 42mm Hetre 42mm also fit, but without enough clearance to be really safe. Tektro R559 brakes.

  2. Make: Katakura
    Model: Silk
    Year (or era)/serial number/distinguishing feature(s)/color: Full chrome, ca. 1984
    Frame size: 61 c-c
    Largest 650B tire that fit: 650b x 38 with fenders fitted
    Any 650B tire(s) that you tried that didn’t fit: na
    Brakes used in conversion: Tektro 559
    Other comments: Easiest conversion I’ve ever done…this bike fit the tires/wheels almost as though it were designed to do so. Fork was medium trail though.

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