35 psi is maximum pressure. I never go with the maximum except for on a truck if I know I’ll be hauling near the maximum load rating of the tires. Any given tire can also fit many vehicles that weigh different amounts. You don’t need as high a pressure on a 1500lb vehicle as you do a 3000lb vehicle.
I’ve got 10 ply AT/MT tires on our half ton truck. Their max pressure is 80psi but if I put that much pressure in them, it would bounce all over our gravel roads, especially the rear with nothing in the bed. Max load is 3,000lb for each tire. That’s 6,000lbs per axle. The entire truck only weighs 4,400lbs and the rear axle weight is way less than half of that. Maybe 1,700lbs sitting on a pair of tires rated at 6,000lbs.
I run 35 on the back and 43 on the front. I only buy the 10 ply tires because they last longer on the gravel roads. The closest grocery store is 18 miles away with 13 of them being gravel.
Tires do tend to loose a little pressure in the Fall and Winter due to the lower temperatures.
Yup, same here.
At 60+ lbs like driving on rocks.
45 front / 35 rear. Unless hauling like you said.
That 5.9L Cummins is a heavy load out front.
Although, if I’m looking at a long haul on the highway I’ll pump ‘em up for MPG and responsiveness.