"a heck of a lot faster"

This is indeed the "indirect" tire pressure rotation system. You're
right, it actually requires that the pressure be so low that the
outermost belts are sort-of buckled in, but this is what happens if you
are 5 or more PSI down on a big vehicle.

I think SUV's are soon (already?) required to have a "direct" method
(after the tire fiasco of a few years ago), an actual pressure sensor.

Tim.