Started a tubeless set up, inflated before adding sealant to check there was no issues with valve or seating of bead. Left it five minutes and it was severely deflated. Thought maybe I hadn’t put the valve in correctly, so redid everything and same issue.

Tested in the bath and get the above, all the way around the perimeter (nothing from spokes, beading area or valve.)

Tyre is a Maxxis High Roller II 27.5×2.40WT DH casing.

I know tyres need the sealant to fully prevent air loss but given it deflated in five minutes and is DH casing this seems like excessive air leaking.

TL;DR – Is this tyre defective

Effervescent Tubeless Tyre
byu/MagicianStrange8271 inbikewrench



by MagicianStrange8271

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4 Comments

  1. Kelsinvariel on

    A lot of bike tires are not tubeless, but tubeless ready. That means that they require a sealant to work: it will cover the inner surface of the tire and eventually make it airtight. Looks like you have exactly such a tire

  2. >_>

    I’m looking at the Maxxis website and there’s a noticeable lack of TR after DH. DH is also a wire bead.

  3. Maxxis TR Tires require sealant for proper air retention. Please do not ride without adding it.

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