Hey guys,
I upped the tires on my 2019 F350 from the stock 265x70x20?? I think to the 35x12.5.20 Nitto ridge grappler.
Nitto officials say the tire is not recommended as it does not have the load rating that can support the truck.
Since I have them now, does anyone have a safe recommendation for PSI for every day street / Highway driving?

Thank you.

 

What does the vehicle door jam sticker say for front and rear tire pressure?
Whats the max tire pressure of your new tires?

 

The tires shouldn't be on the truck of they aren't up to the recommended load capacity. Adjusting the tire pressure for it is not a safe solution.If one blows, an accident happens, someone gets hurt, your neck will be in the noose.Your tire dealer's neck should be in there too for installing tires that are not up to the task.

 

We have a combination of bad things here.

The sticker DOES recommend a particular load range and tire pressure. If the owner decides to not go by the CERTIFIED vehicle recommendations of the manufacturer, he/she absorbs all the responsibility. A tire place will not usually take that responsibility because there is always that problem of a mishap and lawsuit and they could lose the farm, insurance and all.
Like they say, ignorance of the law is no excuse.