Ron,This link appears to have a lot of tire info including a recommended pressure gauge as you inquired about which coincidentally is the same gauge I use. I am not a tire expert so I cannot attest to the info on the site but it appears to have been compiled by someone with considerable experience in tire construction and failure analysis.http://www.rvtiresafety.net/search/label/GaugeThis is an Amazon link to the pressure gauge.https://www.amazon.com/Accutire-MS-4021B-Digital-Pressure-Gauge/dp/B00080QHMM/ref=sr_1_1?ie=UTF8&qid=1494687316&sr=8-1&keywords=accutire+digital+tire+gauge
Nice test and report Ron. Now can you run the same test at 70 and/or 80 PSI, which is what most of us run our tires. I am not worried about the gauges that don't go that high.Maybe you can start a new tread so we don't steal this one.Thanks.
Maybe you can start a new tread so we don't steal this one.Thanks.