Thought I would start a new thread on this.. My TPMS also shows tire temps. Tire temps while towing today (in *F): LF 107 LR 107 RF 120 RR 113 Ambient temp 71* and towing 70 mph. This ...
OP, one trip is not enough time to build a base line for what's normal. In your rig's picture the tires look very close together...do you have torque flex axles? If so they do not equalize so you will not have equal reading front to rear. Check the brake drums too with a IR temp gun as that is another unequal source of heat.