For those with a Dually tow vehicle

[vipermanden]

What tire pressures are you running in your tires when you are towing, and when you are not? I have been going with the 80 psi in the front and 75 psi for the rear wheels when I am towing, and then go with 75 in the front, and 65 in the rears when not towing, and I measure my tread depth wear with a tread depth micrometer, and it still shows I am wearing more in the middle of the tire indicating that I am running with too much psi? I'm thinking I should stick with my towing numbers for safety, but then maybe go down to 70 in front and 55 in rear when not towing? What do all of you do? Thanks