No experience with tires mounted on Class A rigs, but I would imagine that they are engineered to handle the additional temp and psi like truck tires that indeed carry a very heavy load and travel at higher speeds than stated above. At one time we did temp/psi monitoring on tires and hubs at stops along the way, can't remember the last time as it's been awhile.
We do most of our RVing in the four corner states plus TX and Cali, lots of traveling when temps are soaring. No worries, just set psi on all tires (max psi for TT and rear truck tires) first thing in the morning before we head out and let tires perform as designed knowing full well they will increase in both temp and psi which manufacturing engineers have accounted for.
