Re-seating / inflating Tubeless Tyres?

Apologies if this has been done to death before.
After my crash and the tyres coming away from the rims I thought I had nothing other to do than popping some more sealant in and pumping them back up. A lot of swearing and a an hour later and the tyre wont go up. Went up nice and easy first time round, do the tyres stretch at all? Will they maybe need a clean to remove the old sealant first?
Any help would be greatly appreciated before I throw these in the bin and have a hissy fit!

They can get a bit stretched and harder to seat – depends how old they are. If you think there’s plenty of life in them I would persevere, though, as it’s only when they’re pretty knackered that they fail to seat IME.

I’ve only ever used a track pump for tubeless tyres, but the 1 occasion I felt like I wanted a compressor was for seating an old set of Nobby Nics. I wonder if anyone has ever had a cardiac arrest by track pump?

A lot of swearing and a an hour later and the tyre wont go up

You’ve got Schwalbe tyres, no?

I’ve had this exact problem on certain tyres. I now just use a cheap-ass CO2 cylinder to blast it up. Plenty of other solutions, but this one suits me and has minimal cost.

Its Maxxis Ardents, they are over a year old now but still got enough tread to warrant keeping them for a while. Gone through two CO2 cylinders already! I’ve cleaned the tyres now as the bead was covered in old sealant, however I have now ran out sealant so will have to wait before trying again.
Its annoying as they were so easy to setup first time round!

Are you using the inflate with tube, unseat one side, remove tube and inflate method?

Use the tyre lever trick, hook the tyre bead and use the the lever to seat it on the right part of the rim. You probably won’t get it all on but it should be tight enough to seal and get the pump to inflate the tyre.

There might be a youtube vid on this somewhere…

Or a CO2 cartridge.

After my crash and the tyres coming away from the rims

Have you actually checked for rim damage and/or dirt in the rim where it seats???

I had a crash couple of months ago…. got a stick went between the rim and tyre and after pulling it out the sod wouldn’t seal…

When I got back to the car and pulled it apart there was all sorts of crap in the beading and on the inside of the rim. An old toothbrush revealed a mini forest in my rim where the tyre seats.

Cleaned both and resealed with a track pump…

however I have now ran out sealant so will have to wait before trying again.

Shouldn’t need to… you can seat them and they might then go down but unless there is a leak they should ping without…

You can then just inject through the valve when you get more sealant…

What I have also found is that sometimes the old sealant acts like glue so the tyre sticks to itself so you need to puff it out and do the tyre lever thing rickmeister recommends at the same time.

Have you cleaned off the old dried on sealant off the bead. If you do this they normally go up easily.

Have you cleaned off the old dried on sealant off the bead. If you do this they normally go up easily.

Nah, not always. I’ve had new tyres (Ardents) on new rims (Stans Flow) and they wouldn’t go up with a track pump no matter what I did. In the end, CO2 got them banged onto the rim and they were fine. On the other hand, Ikons on i29 went on with ease. Most are ok, but some combinations always seem to be an arse to seat no matter what you do.

Just found the youtube video fo the tyre lever trick. Looks pretty good so will give it a go.
Yeah i’ve taken the tyre off now completely and cleaned it up and got rid of as much of the old sealant off the bead as I can.
No rim damage that I can see!
I’m still gonna wait until sealant arrives as I’m not in any hurry and I buy the big bottle and just pour it in rather than getting syringes etc to get it in through the valves.
Cheers for all your help!

You’ll need to scrape off the old sealant from the tyre and rim, that’ll prevent the tyre from sealing by allowing the air to leak through.

is there any sidewall damage. I spent ages trying to reseat a maxxis tyre after clanging it off a rock and near instant deflation.

turned out there was a large split right on the bead. sounded & felt like the air was escaping around the bead so I didnt spot it for a while.

No rim damage that I can see!

Have you looking in the groove though where the tyre bead seats ???

I’m still gonna wait until sealant arrives as I’m not in any hurry and I buy the big bottle and just pour it in rather than getting syringes etc to get it in through the valves.

furry enough 😀

I used to then found that an old bleed syringe and tube actually just fits

The beauty of doing it this way though is you don’t waste a load when they bugger won’t seal….

Though for me its because I have one set of rims with the entire opposite problem… you only have to breath in their direction and they seal and are a right sod to get off… like seriously hard… I actually use a guitar pick when I really have to.

If you buy the Hope OEM kit (which is a good value way to do a conversion), it comes with Stans valves, tape and two small bottles of Stans fluid. Hang onto these small bottles as they are easily refillable from a large bottle and contain just the right amount for a normal sized wheel. They go into a presta valve perfectly and are (in my experience) the easiest way to get fluid into a seated tyre.

Those small bottles are an important part of my toolkit now 🙂

As well as cleanign the tyre, I’d recommend lubing the bead – soapy wter will do, or pop into your nearest tyre centre with an empty jar and ask for a bit of the goo they use to lube car tyres. Smear of that helps it all pp into place nicely, works a treat for tight beads