Tire PSI
on my 2016 Ford F350 superduty dually 4x4 with Goodyear LT 245/75R/17E tires. The Door sticker says 75 front 65 rear cold. Tires say 80 PSI cold. Pardon my ignorance, but which one do I go b...
Forum Discussion
GordonThree wrote:
I'm no expert, but my studying of this has lead me to this belief:
The tire marking is the maximum design cold pressure as determined by the tire manufacturer.
The door jamb sticker is the vehicle manufacturer recommended pressure to achieve balance with the rated load capacity, ride comfort and government fuel economy mandates.
If you look up the load charts for your tires, you'll see the Ford pressure rating matches up with the axle rating.
My grocery getter 1500 has Goodyear E tires (10 ply), but only needs 42 psi to achieve the axle weight rating on the tires. The tires are also marked 80 psi max cold. I run my rears at 60 psi when towing, just to firm things up a little.
You hit the nail on the head,I believe the difference is in the tire and axle differences, as is load carry capacity.
Thanks
