What size tires are you running? I've noticed when running 235-85-16 vs a 245-75-16, I needed about 10 more lbs in the 235s vs 245s. If you have 265-75-16 tires. I.could run those at 55-60 lbs and be fine for loads in the 5000-5500 lb per axle. Fronts about +5 lbs vs rear.
First one HT are a.softer sidewall tire vs.some. I have them on work van. Overall I'm happy. I do not tow, only run empty 5500 empty lbs vs 9-10,000 loaded.
I have.an off brand from discount that were 125 per tire with a 60k wear out on them. I.would.call.them.an.aggressive hwy tire vs AT.they.are labeled. They handle.heavy.loads very well.
Marty