• It almost looks like the dimple for the tyre clearance is approx where the rim is rather than where it should be for the tyre...

  • Yep. Familiar story - dimples seem all wrong. As a result, my All Season (from the initial batch) can barely manage most 33s on 700c (currently running Challenge Grifo 33 rear). 42? No chance at all.

  • Same on my batch one isen. The center of the dimple is at the rim tyre interface for a 700c wheel. I guess it is positioned more to give clearance for 650b?

    I'm happily running 32mm GP5000 with mudguards.

  • In fairness to isen, the spec for the first gen was 35mm in 700c. Challenge tyres tend to come out a bit wider and with nobbles “33mm” is prob about 35.

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