Tubeless Tyres -"saying the same things about tubeless tyres over and over again" Hippy read the first f**king post

I snatched a load of stuff up this morning when I was leaving for work so currently got a non tubeless tyre and tube sitting on it to press the tape down. Given it’s a non tubeless tire and a hookless rim it’s sat at the farthest end of the workshop incase it pops!

Hahaha ear defenders on I hope :D

Bad day on the tubeless for me. Started with pouring fluid into a syringe without a cap on the end of it, in the bathroom.

Tan wall one I am advised could be tape, but first poc new rubber seal/washer thing.

Got a road wheelset which came tubeless without a removable valve corr. Valve also can't be screwed down like you would on an inner tube valve once pumping. No idea when they were last topped up.. do I break the seal, take some tyre off to proactively maintain them hmmm

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Anyone tried the Topeak Tubihead upgrade or any other of their upgraded hoses? Worth it over a £10 standard hose and valve. This is only for a garden sprayer inflator bodge so head says no, and if sensible you'll be inserting sealant after seating anyway, rendering this kind of useless.

That rim looks a bit like it's deforming around the spokes, is it just a strange effect in the photo?

It's probably a Mavic with their scalloped rims. Remember Ksyriums?

I don't. Had some open pros at one point but pretty sure they weren't lumpy.

Had some open pros at one point but pretty sure they weren't lumpy.

Old Open Pro wasn't deliberately lumpy, new one is. They're milled to leave thick material around the holes and thin material in between.

Just started riding a bike I haven’t used in a few months, with 26x2.8 WTB Rangers, Caffelatex sealant.

Topped up with 60ml of sealant, rode a while, started slowly losing pressure. Topped up a bit more, took wheel off and swilled it around… still slowly losing pressure. Only the rear, front is OK.

No visible sealant peeking through anywhere.

Bizarrely, I can’t hear or feel any sealant sloshing around inside the voluminous tyre, and there’s no sealant sputtering through the valve when inflating/removing the core. Even though there’s now around 150ml of fresh sealant in there…

What to check next? Please don’t say remove the tyre, these are a bitch to get off the WTB rims…

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Hold it under water to see if bubble come out?

don’t say remove the tyre

If you don't remove the tyre, how are you going to replace the valve? When I've had slow non-obvious leaks, it has been where the valve seals to the rim bed.

Or degraded/failing rim tape. Tyre off.

150ml or cl? You need a good amount for that tire

Gorgeous photo btw

Millilitres. Prescribed dose is ~80ml if I’m not mistaken. There should be loads sloshing around in there, but I can’t feel or hear it…

@snoops You’re probably right, time to muster up the strength to wrestle with this sucka.

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If your tyres/wheels don't hold air - pump them up and cover with a washing up liquid and water solution. Bubbles will form at the point of leaks, shake wheel around so sealant gets to the leak and hopefully it will seal.

Clue is in the thread title

Took a long bath this morning to contemplate my own slow and intermittent tubeless leak. Kept the water and dunked the wheel afterwards.

Tester is always right. It was the valve. Not a steady stream of bubbles, but a few here and there at different orientations.

Tyre off. Sigh.

Sometimes you can fix them by loosening the nut, giving the valve a push/wiggle and tightening it again, then try and get the sealant on it by holding it valve down then flipping it over quickly. No guarantees but worth a quick try.

Mine seems to have miraculously sealed itself after riding the last couple of days. Looks like it was just sulking through neglect…