What tire psi?

[Hennigan]

Hey everyone,

I've had my truck back for a few weeks now and everything's running perfectly. However, I can't find a comfortable psi to run my tires at on my 04 f250. They are 265/75R16 Hankook Dynapro ATMs. The door sticker says 65 psi front and 80 psi back but I'm thinking that is what the stock tires are rated at. It says maximum psi of 80 on the tires themselves so I'm really confused as to what I should run them at and if they should be the same all around or different like the factory door sticker? Any help would be appreciated.

[2003kingranch]

I run 65 up front and 65 in the rear. thats where my tires are wearing best and it rides good

[colo_dually]

What is the tire size on the door sticker?

When towing (which the door sticker sets up for) the values on the rear tires end up different.

Best results would be the chalk method (draw a line move the truck, and adjust pressure depending on where the chalk rubs off). A little time consuming, but it works.

For reference, I run my tires per the sticker (as it happened to match pretty close) 75psi front, 60psi dual rears on 245/75R17s.

[Hennigan]

Originally Posted by colo_dually

What is the tire size on the door sticker?

When towing (which the door sticker sets up for) the values on the rear tires end up different.

Best results would be the chalk method (draw a line move the truck, and adjust pressure depending on where the chalk rubs off). A little time consuming, but it works.

For reference, I run my tires per the sticker (as it happened to match pretty close) 75psi front, 60psi dual rears on 245/75R17s.

Factory sticker says 235/85R16

[Hennigan]

Originally Posted by 2003kingranch

I run 65 up front and 65 in the rear. thats where my tires are wearing best and it rides good

I have mine at 63-65 psi all the way around and the front feels soft under slight turns at 55-65mph. Feels like I should inflate them more but I'm afraid with the factory sticker saying 65 psi max for the front....then again that's for a different size and brand tire

[jesilvas]

Factory PSI rating is for the original tires on the truck and original everything.
Get the tires up to operation temp, then draw a paint or chalk line across them.
Drive till it starts wearing, which will be a few revs.
If it's wearing in the middle, too much air.
Wearing on the sides, too little air.

My Dynapro ATm's on my rear axle (4), are down to 45 right now, but I need to drop them to 40. They are very stout, stiff tires, and hold all the empty bed weight really well Seriously, though, I love em so far. No ice/snow testing yet though.