I guess you haven't done much pumping with these. They take a long time and a lot of work to pump up a big tire even by a few PSI. Ask your wife, girlfriend, or mother to try this sometime.
Also, I need a pump that can reinflate large off-road tires that have been taken down to minimum for maximum traction.
Let's see - they're fragile, hard to read, difficult to position, can easily be thrown off by dirt or other foreign materials getting into the barrel, and have no way of dumping a measured amount of pressure.
Achim
axethetax