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I have been busy the last few weeks, selling a house and moving. I was pulling my 28 foot enclosed car hauler with a load of furniture, and thinking my steering seemed a bit sloppy. My thought was that I needed to get the front suspension looked at soon. Probably have something wearing out.
Last weekend I ran the truck over to my local lube place for Mobil 1, a maintenance check, interior detail and exterior scrubbing. The lube technician comes up and asks me what I want for tire inflation. I commented that I run them at 65 PSI. He commented that they are all 85-90 PSI.
Say what?!
I went home and checked my fairly new tire guage. It said my tires were at 50 PSI. I dug out a third guage, it read 65 PSI.
The newer Harbor Freight gauge went into the garbage. Truck sure rides smoother and steering seems a lot tighter.
I've had great luck with Accu-Gage tire gauges (purchased a few from https://getagauge.com/ over the years). I have three for different psi ranges. The one I use for my truck and trailer tires (0-160) is several years old and has been bounced around, left in a hot car or trailer, and just generally abused, so I was wondering if it was still accurate. I asked the tech at the tire shop I go to if he could test it against a known-good gauge. He said "oh we have a setup for testing gauges", came back a few minutes later and said he tested it pretty thoroughly at a variety of pressures and it was dead-on every time. Not bad for less than $15!
I usually run mine at 55 psi. Any more than that and it feels like I'm in a dump truck. I've had the best luck out of Myers gauges. I carry one on my rig and in my super duty.