this post was submitted on 29 Jun 2025
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Tubeless tire leaks from valve (piefed.social)
submitted 1 day ago by perishthethought@piefed.social to c/bikewrench@lemmy.world
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Hi again. I've got most of the leaks sorted in my gravel bike's new tubeless tires, but they're still going flat, now in about 5 minutes. I did the soap test to determine where the leaks are, and the only leaks I can see are right at the base of the valve stem.

Searching for this online, most answers were "it's the tape". But these wheels are only about 1 year old and the hole at the valve looks clean / flat to me.

I am using Stans valves and have about 4oz of sealant in there right now, if that helps.

Is there any way to resolve this, short of completely re-taping the rim?

Thanks!

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[โ€“] PlantJam@lemmy.world 1 points 1 day ago (1 children)

Try completely loosening, pushing through, and then retightening the valve stem. The idea is to get some fresh sealant under and around it.

[โ€“] perishthethought@piefed.social 1 points 1 day ago

Thanks, yeah, I read a suggestion somewhere saying to dip the rubber cone in sealant before inserting it. I tried that, but it's still leaking.