So...this is my first heavy duty vehicle (2500) and I see the tires say "Max pressure of 80 PSI". Might have been 88...can't remember now but in any case...I have never had a vehicle that wants more air than 44 PSI.

From the dealership they were 57 in the front and 65 in the rears. What is a happy number to put them at?

I will only have a max cargo load of about 400 pounds in the back at the heaviest. I am thinking 65 sounds fair.

thoughts?

Will

 

Same question from me...

I have tires that max rating is under the recommended rating in the side doors...

 

I would run what ever the placard (inside drivers/left side door) tells you to run. That is set up for optimal mileage and wear. In my fleet we up the psi in the rear a little to compensate for the heavy loads we carry.

 

Are you sure you don't have that backwards or the wrong tires on the vehicle?