I attempted to ride with "tubeless" Pro One 20" tires on the front of the SprintX last spring, and all went well for a month or so, until the right side tire decided to deflate while sitting in the back of my car... made a mess, and I couldn't get it to reseal with just a hand/floor pump. Went back to Duranos with tubes, cleaned up the Pro One tires, and put them away.
Last week, I let myself be convinced to try "tubeless" again, since they were just sitting in the garage... I successfully mounted both tires onto the wheels, Sunday night, putting in the 2 oz. of "Stan's NoTubes" fluid, and using a CO2 cartridge to give it enough of a blast of gas to seat/seal the tire on the rim, rotating the tire for a while to distribute the liquid evenly, pressurizing them to 80 psi. Everything appeared to be fine, and I went out for a 5 minute ride, with no issues.
Monday night when I got home, I discovered that the right side tire had deflated again, leaving a puddle on my garage floor...
What would make a tubeless tire suddenly deflate like this, just sitting there?