I tried different valves with no luck and used gorilla tape for inner wheel so I don’t think it’s the valves and I’ve taped it making sure.

I’ve covered all the holes. I am at my wits end with tubeless.

How can I methodically figure out why my tubeless MTB rim is leaking air?

  • 2
    I don't understand what you're trying to say. Commented Aug 23, 2023 at 21:32
  • 1
    Are you asking about a tubeless setup?
    – Hursey
    Commented Aug 23, 2023 at 21:48
  • 1
    Are your rims and tyres designed to be tubeless or is this a ghetto-tubeless ?
    – Criggie
    Commented Aug 23, 2023 at 22:35
  • Does your tyre look “sweaty”. Even tubeless ready tyres can leach sealant and air when settling in. Commented May 20 at 19:48

1 Answer 1


Do you have a large tub that will hold water? Inflate your tubeless tyre, and submerge a length of the rim in water.

There should be a stream of bubbles leaving the area where your leak is located. Avoid submerging the whole rim because it's not good for the hub, but anything up to 7/16ths of the rim at once should help.

The downside is that sometimes air leaks can travel which can be confusing.

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