4 different tire gauges, 3 different readings
I purchased a new non-digital tire gauge about a year ago. Been using it without any problems. Saw another one at the local auto parts store and thought I'd buy it. Came home and just for the heck of it I thought I would compare the two, one digital the other dial type. Wow.......6 pds. difference in readings on the same tire within 1 minute readings? I thought this cannot be possible. Borrowed my neighbors and got another third different reading? It registered three pounds different than the first and second ones. What the heck gives here. Got out my very expensive one from the MH which I paid $79.00 for several years ago and the took another reading. It came within 2 psi of the first one? So, are number 1 and 4 the acurate ones? Which one do I believe and why four different psi readings with 4 gauges? This is perplexing. Any experts here?