Old 06-17-19, 10:25 AM
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NoWhammies
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Seating tubeless tyres - questions re: sealant and the 'snap, crack, pop'

I recently installed new tubeless tyres on my road bike. You can read all about it here.

The tyres installed without issue and I was able to inflate them without the need of an air compressor. My bike pump was able to inflate the tyres, and I inflated them to about 110 PSI to get them to seat. Riding pressure is, according to the side walls, 87 PSI.

Background.
  • While I did inflate the tyres to 110 PSI, only one tyre/rim 'snapped' in to place.
  • After applying soap and water to the tyres/rims, I could see bubbles from where the air was leaking out
  • I went to a LBS and asked them if I needed to use a compressor to blast air in to the tyres/rims to get the 'snapping'
  • I explained about the soap/bubbles. In fact, some soap/bubbles was still on the rim when I arrived.
  • The LBS told me that without sealant, the bubbles was 'normal'
  • Not all tyres will 'snap, crackle, pop' when they are seated

So...


  • I put Orange Seal in both tyres
  • I rode 150+k and the tyres seems to be holding air ok during the ride
  • The next day I took my bike down and had to add approx. 10 ~ 15 PSI to the front tyre
  • There is no leaking of sealant on the ground (I hang my bike)

Question:





  • Should I be concerned about the loss of 10 ~ 15 PSI overnight?
  • If the tyres held air during the 6hr 150k ride, can I consider them seated?
  • Was the LBS right about needing the sealant to stop the air from leaking?

Thank you.
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