Tubeless tyres just won’t seat…

Tried with the tubeless inflator

Did you remove the valve core for extra air flow?

I found my schwalbes very tight- wouldn't go on my officially road tubeless rims without a massive battle and tended to ping off when they deflated too. Went on great with some old xc tubeless rims though

Is there a hole in the rim tape?

I had that with some Primes. Whacked some muckoff tape I had laying around on there and job was a good’un.
I inflated my Schwalbe’s with a normal track pump after that.

I had some HillBillys that refused to seal, only tyre I’ve ever struggled with.

I left it inflated at 40psi or so with a tube in for a couple of days and tried again. Went up straight away.

If it won’t stay on the rim even with inner tubes, it’s faulty, no?

If it won’t stay on the rim even with inner tubes, it’s faulty, no?

It’s both wheels!!

Is there a hole in the rim tape?

It won’t even seat with an inner tube never mind trying it tubeless

You said it unseats as it deflates?
What happened with the inflator initially when tubeless? Did it seat but not stay seated or wouldn’t seat at all?

Is there any old sealant in the bead of the rim?

What happened with the inflator initially when tubeless? Did it seat but not stay seated or wouldn’t seat at all?

Wouldn’t seat at all

So sealant in rim bed, the tyres I took off (non tubeless set up) worked fine, ie they didn’t pop of the lip when deflated

Are the tyres quite baggy on the rim? Maybe a later of two more of tubeless tape may help

Conversly to tha above, have you taped up to the bead of the rim?
I try to avoid doing that and buy narrow tape to just cover the spoke holes. I have found tape under the tyre bead will hold off the tyre and prevent it seating.
Any leaks will be fixed by the milk.

Use a washing up liquid water mix and spray around tyre bead then pumped up to max pressure and the tyres will pop into place

Are the beads of the tyres too loose and fall off the rim bed or are they too tight and struggle to get pushed on to the rim bed and then ping off?

5plusn8
Free Member

Conversly to tha above, have you taped up to the bead of the rim?
I try to avoid doing that and buy narrow tape to just cover the spoke holes. I have found tape under the tyre bead will hold off the tyre and prevent it seating.

Yah, this is the best way to do it, on welded rims anyway, if they're wide enough for it. Works fantastic since the tyre can't push the tape off when changing tyres either. Not sure it's the fix here but thought it was worth backing up, I've not looked back since I started doing it

I had the same issue a week ago. Just couldn't get the air in quick enough to seat it so took it to my LBS to whizz some air in with the compressor. Sorted in less than a minute.

I run G-One speed on my commuter and they are a pain to seat. They are really good tyres though so been through a few wheelsets and found the wider the rims, the harder they are to seat simply because the bead just naturally roll in.

After many hours of struggle, I found ratchet strap around the outside of the tyre, work the bead towards the rims, then it seats easily after that. I needed to do this even after they are nearly worn out, otherwise, they just refuse to seat.

After years of setting up tubeless tyres I now take the approach that if it doesn't work straight away then give up, sell the tyres and get some different tyres.

If find that I need to seat the bead in the central channel to get tight tyres on, but this isn’t the best place to help them seal.

I therefore carefully (so as to avoid damaging the rim tape) hook a tyre lever under and work one side up out of the central channel and onto the shoulder of the rim near the hook. Keep sliding the bead up around as much of the rim as I can until I can’t get any more up. I then do the same on the other side working in the opposite direction. This usually creates a tight enough seal to get me going and then it’s just a matter of applying enough air pressure with a track pump to pop the seal out all the way round. The definition of ‘enough’ air pressure can sometimes exceed recommend levels of riding but just as a means of seating the tyre, then I deflate them.

Even the most stubborn tyres succumb to this method.

I've had something similar with Schwalbe One tle road tyres. With soapy water, valve core removed and an airshot, I can get them to seat but they always unseat when deflated to put the sealant in, even if left overnight. I can't get them to inflate with the valve core in so putting sealant in first isn't an option.

I gave up and fitted tubes. They need 120psi left for a week before they seat.

So 2 weeks later I finally tried them on a different wheel set. Exactly the same issue. Even after inflating with an inner tube, as soon as you deflate the bead pops off

I’m going to ask for my cash back as The tyres were sold as tubeless and at 45 quid each I expect them to work