Originally Posted by
carleton
I'm not suggesting that yours is not defective, but latex tubes in general lose air quickly. Butyl tube will hold air for days (if not weeks). But, I've found with latex I'll sometimes have to pump tires twice in the same session.
I hear you. But a 140 psi to 80 drop in less than an hour? That doesn't sound right to me. My latex tubes on the road at least stay firm for the duration of a much longer ride.