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  • Looking at getting some GB guards for my crosscheck running 700x42 tyres and not sure if I should get 50mm or 60mm?
    Thoughts anyone?

  • 50mm should be enough. I run 38c tyres under 45mm guards and it fits well. I used to run 28c tyres under the same guards and it looked a bit gappy. For the same reason, I think 42s under 60mm guards might look a bit off unless they're really knobbly tyres. Both should work fine though.

  • 37c Voyager Hypers are only just covered by 50mm GBs.

    Admittedly, the Hypers are quite large for the claimed size.

    Conversely, 35c Kojaks are adequately covered by 45mm SKS Chromoplastic.

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