I check tire pressures early in morning. Same as I do with racecar, before sun hits them. Along with setting pressure I look for variance between tires. On the road I will feel all Rv/trailer tires for temperature. If I feel something out of order, will check with temp gun. A failing tire will usually start getting hotter than others under same load/conditions. My base pressure is set from axle weight charts after going to scale.
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