[Megahurtz]

Sounds like the beads aren't set. Mine don't lose air any faster than a normal tire.

[dreksnot]

Originally Posted by JSH

I'm having a hard time keeping air in these tires. I put 25 in them and they're down to 12 the next day. Anyone had this problem?

Hmmm. I wonder if these are anything like slicks (of sorts). I slathered Dawn dish soap on the insides of my M&H's to "seal" them (old school trick), and it worked wonderfully (stayed inflated, no air loss). When I had several sets of MT ET Street drag tires before, and didn't know this trick, they'd leak down overnight a bit. Or, could be your bead or valve stem...