I've got 50mm on mine right now: https://twitter.com/firsthippy/status/1296026578418270208
I just had to carry a couple of bikes out of a quagmire after mud jammed both bikes front and rear so I may not risk 50mm but a little smaller could work.
@atz started
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I've got 50mm on mine right now:
https://twitter.com/firsthippy/status/1296026578418270208