• I've had tubeless set up on my cross bike for the past couple of years without any troubles, but suddenly a set of Schwalbe x-ones that have been installed fine for the past few months have begun to leak at one point on the rim and won't seal.

    I can't see any damage to the tyre and I'm beginning to suspect I've damaged the rim? Is there anything else I should check? Damaging the rim seems slightly unlikely because although I regularly smash them into hard things, I haven't done so recently and the leak is a new problem.

  • You may have pinched the tires just where it meets the rim. Or the rim tape may have somehow moved and the air is leaking under. The valve may be full of gunk and not closing fully.
    Just fill something with water and find the offending leak, mark it and investigate

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