My G+ tubulars did this as well. I put Cafe Latex sealant in, and found it came out in small bubbles between tread and casing. It did seem to slow air loss though, although I have to wipe the sidewalls from the sealant every now and then. It is a pretty annoying problem

yes mine did that until i put more sealant in and made sure and rolled the wheels real good for awhile right after pressuring up. sealant seemed to plug it all up.

I set up that wheel with a Corsa before a race and it was doing the same thing, I tried to roll it around to seal it, then did a 40 K (BTW nice job at TX State Sean H) and it was flat the next morning. Maybe this one will seal.eventually.

Thx! You race too?

When you say your tire mounts fine but quickly loses air, I assume that means you have never gotten a wheel fully set up to ride??? Yes, tubeless is very much an art and it can takes some time and patience to get a wheel ready to ride. If you use the right sealant and enough of it, eventually all of those bubbles should go away. What sealant are you using btw? I've been using Orange Seal with my Vittoria Corsa Speed and had great success.

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No, I mean it inflates fully, beads pop, air it up to 120 psi, everything appears fine, and in the morning it is flat. I've been riding these tires tubeless since they were released without any issues, it seems that the newer tires, with the shiny sidewall have this issue?

Sean H, your team beat my team :)