I just installed 35" X 12.50 X 17" Goodyear Fierce Attitude M/T tires on my '18 JLU Rubicon. So, I think my rig has a curb weight of 4,455lbs but I have added the tailgate reinforcement, and a few other things so I say my curb weight is closer to 4,600lbs give or take. My tires max load (lbs) is 3,000 and max tire pressure (lbs) is 50. I don't understand how to calculate the correct pressure, and a call to Goodyear didn't help as they said "we usually recommend around 8-9 psi lower than max tire pressure". So, can someone please help so that I am not prematurely wearing out my tires? Thanks so much.