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Today we are making mtb tyres tubeless - by using tyre sealant. Hi there! I have been asked for instructions and reasons - making tires tubeless by using tire sealant liquid.

I'm not an expert in this area - if in any area - but let us do this as instructed - and see how it goes. But let us think first what is the reason to do this.

Of course it is not compulsory - but there are a few reasons behind. First reason is saving weight. When you use tire sealant instead of inner tube you will save about 200 grams rotating mass per tire.

Another reason is puncture protection. When the liquid is in the tire, it can fix - small punctures on the go. It may fix the tire before you even notice the puncture.

It is a big plus. Of course it cannot fix bigger holes - for those cases you must have a spare inner tube. You can not fix the tubeless setup on the road otherwise.

Third reason to convert to tubeless is - that you can ride with lower tire pressures - and thus have better grip. The sealant acts like a glue between the tire and the rim.

All in all with this setup you can play more with tire pressures. The rims are 25 mm rapid ztr - they are tubeless ready rims as stan's says here. Which means that the rim has a different profile.

The rim center is much lower than the shoulder - where the tire should be. One challenge here is to get the tire in the right position. You must also check the rim tape.

It is vital especially now when it should be airproof. Check the spoke ends and the hole for the valve. The tires are maxxis ikon tubeless ready tires. If these were new I could try to do this even without the sealant - but the tires have been installed a few times - so i'm afraid they are not acting as new.

I will do this using schwalbe doc blue sealant there is 500 ml bottle of sealant - empty bottle for dosing through the valve and then a tool called soul remover ! Well no this is for removing the core from schrader type valve.

We do not need this because we have presta valves. And when we take off the inner tubes - we also get rid of the valves. So we must have separate tubeless valves for the job.

If you have had presta valves before - these must also be presta because - the hole size in the rim is according to the valve type.

These valves are equipped with with removable cores - so we can inject the sealant liquid through it. And still one thing we need lubricant! No this is not what you think. This is lubricant is called mounting fluid - soap water would do more or less the same thing.

With this we get the tire easier on the rim. As we looked on the rim profile we may need some help there this is the thing. Let us start by getting one side of the tire on the rim - and installing the valve.

As said, you could do this also with soap. Hmm. It smells like a soap. So it is just soap! Even the lather is the same. If it feels hard already in this phase you should put the tire edge to the center of the rim - so you get a bit more space to play with.

You should do this by hand only. Then we pour some liquid in the tire. You should put 60 ml for mtb tyre. For a road tire 30 ml is enough. Some use 90 ml for 29er but let us try with 60 ml - as we happen to have a 60 ml bottle here.

Let us pour some liquid first here. We could also inject all the liquid through the valve now the tire is somewhat on the rim and some liquid inside now we inject the rest of it and - then just try to get the liquid all over the tire.

And then try to get some air in. Now we have all the sealant in the tire. Now we just spin it in every direction to get the stuff allover.

And now we should get the right pressure in - which may be tricky when we do not have the inner tube - which could pull the tire on its place.

We should get instantly big volume of air - it would be nice to have a compressor - but we must cope with a track pump. We could also try co2 cartridge if needed - but let us try this first.

Camera battery died at the same time when the tire got on the rim! Anyway it seems good the tire is now in place. It seems to be symmetrically there you can see if the tire is not installed properly - by following the rim side and the line in the tire wall.

Then we just continue this manouver to get the liquid - also to those places which came up when - the tire jumped on the rim. And then we just follow how well it keeps the pressure it may take some hours and - we may have to pump some more air in a couple of times.

For the moment it seems to be working quite well - at least there is no major leakage anywhere. Valve and its airproof installation is the most probable problem.

But here it seems to be ok as well. Now it is two hours since we did the installation - and the tire has lost 0, 5 bars - so some leakage is still there but now we just continue the manouver spinning the wheel and wait the sealant to fix the leakages.

It looks pretty good now I think we made it. This is how to use tire sealant - thanks for watching - if you have experiences going tubeless - please leave a comment! And do not forget to subscribe - so we will meet again next week goodbye! Well how well did it go? Some botching here.

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