E load tire pressures for daily use and how I came to it.

With my camper loaded I run 80 psi in the rear and 70 psi in the front.
With my truck empty I run 50 psi in the front and 45 in the rear.
My tires always wear even across the tread.

When I first bought my truck the TPM was set at 65 psi and my first set of tires wore prematurely in the middle so when I replaced the first set I had the tire store disable the TPM so I could run what ever pressure I wanted without the stupid light coming on and so I don't have to relearn it every time I rotate my tires.