Step 8: Remove the valve core from the tubeless valve stem. Now use a vehicle air compressor or tire
inflator on the wide open valve (it’s a Schrader style valve at that point). This is to allow as much air
through the valve as possible as you need it to push the tire out of the channel and into the edge of the
rim. You should hear loud bangs as the tire bead locks in (multiple times). If your tire is able to get up to
pressure, things are looking good! If it is not, and you are using an air compressor and not a floor pump,
then you may need to do the tube approach which requires you to remove one side of the tire from the
rim, remove the tubeless valve stem, put in a tube, reinstall the tire, bring it up to pressure with the
accompanying bangs, deflate, break the seal on one side, remove the tube, reinstall the valve stem,
reinstall that side (all while not shifting the other side and breaking the seal), and then attempting Step
Step 9: Do a dry fit test. You can skip this, but you may end up with a bigger mess so I’d recommend it.
When you removed the pump off of the wide open valve, it will have rapidly deflated. Reinsert the valve
core and then pump up the tire to your normal tire pressure. Now see how long it holds pressure for. If
it is still firm when you come back to it, you are good to move on. If it is very soft, you are not getting a
good seal somewhere and you will likely have to go back to Step 3 (SORRY!).
Step 10: Remove the valve core and inject tubeless sealant into the tire using a syringe. Put in the
amount recommended for your wheel size and tire diameter. Reinsert the valve core and then shake,
shake, shake it! Inflate your tire now and you should be good but watch for bubbles! A little bit along
the edge of the tire is okay. If it is at your valve stem, you can try to hand tighten it a bit more. You can
also put it on your bike a go for a very quick ride to help work all of the edges of the tire in fully for the
final seal. If you have bubbles at the spoke nipples, then back to Step 3 for you (SORRY!).