I use 65 psi in the front of my dodge/Cummins with LT265/70-17" E pulling a 10k car hauler.....a 11200 lb 5th wheel rv.....a 16k GN triaxle stock trailer. And 70 psi in the rears when pulling my trailers.
The 5th wheel and GN trailers don't change my trucks front axle weights when hooked. Even the 10k bumper pull car hauler only adds about 1000 lbs on the back of the 2wd Dodge which raises front bumper measured height about 1/4".
A previous 2500 chevy 2wd 5.7 engine long bed with LT245/75-16 E worked great with 55 psi in the fronts......and 35 psi in the rear with a empty truck.
I run my LT tires from around 50k miles on up to 115k miles. I'm all rural and highway out here with no city to drive in so I'm easy on tires.
Use different pressures and see which rides better and still get good service and wear.
