old school observation.... tire whacker
Observed this weekend...18 wheeler operator using a metal rod , strolled around his rig... whacked each tire. No TPMS, no digital tire pressure gauge. The man makes a living driving big rigs. Hm...
Forum Discussion
This started a LONG time ago, before things like digital tire gauges or even radial tires. A driver could tell within a few pounds if his tire pressure was good by the sound it made when thumped. A bad recap, incorrect pressure and so on. I remember seeing my dad do it on his bus every trip.
