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As a millwright I do rounds on the equipement I maintain and in the last few years we take a IR tool with us but the old hand touch is just fine and if you can hold your hand on a bearing housing for up to 10 seconds, there is usually no problem. Cooler is better and all the checks I did on my last trip , my wheel hubs were slightly warm and so were the tires. I put 80 psi in the trailer tires and checked them every driving day. They held their pressure well and so far these Missions have earned my respect. I have only got one flat on a fifth wheel and that was years ago so I have been lucky. I read years ago that tandem axles have a much higher incident rate for flats than single axle, the reason being that the first tire flips up the puncturing object , then the second one goes over it while it is standing up.
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