Originally Posted by
GBK233
I’d get them to seat and then couldn’t get the stem in without too much air leaking out…and one side of the bead breaking free again.
Something doesn't sound right with your process. Here's what I have done successfully with both road and MTB tubeless tires...
1. Mount tire. Inflate tire (with valve core still in the stem) to seat the beads. Some have crackled or popped. Others, not at all.
2. Deflate tire and remove valve core.
3. Add sealant through the stem, and replace the valve core.
4. Inflate tire.
5. Roll and shake tire to coat the inside of the tire with sealant.
6. Ride happy.
One time, a road tire fought me a little on the seating part, mostly because I was using a regular roadie floor pump. A hit of CO2 popped it into place.