I'm rewriting this since I think it didn't submit properly last time. After the install, it leaked down after just a day. I checked the easiest thing first, and found the valve was leaking. I removed the valve (it seemed to be installed tightly), added a drop of oil to assist the seal, put it back in and everything has been fine for a few months now. I notified Dennis Kirk of the issue and they said they would alert the manufacturer of the problem. All in all it's a fine tire, thinner rubber since it's an economy version, but it works just fine overall.