f350 dually tire pressure

[okierver]

its been a while since i had a dually. question i have a 2008 f350 king ranch with Hankook dynapro tire lt265/70r17 tires it says cold inflation on daully at 2910lbs at 80psi. is it still common to run 80psi on duallys on the back tires, im going by the tire itself so i aired them to 80 psi. it is also my daily driver so do i need that much in just driving daily to work. great forum great people love the help.

[Crossthread]

okierver, I go by the sticker on the door. Mine says 60 psi for the rear. At one oil change/service, they inflated them to 80 psi. The center of the dual tires wore a bit before I caught it. Bill

I have an "05 f-350 duals

[sola123]

I also run60 lbs in rear.....running 80 lbs makes it ride rough I think....when got new tires station put 80 in them...could tell on the old country roads we live on pretty easily....Also...have you had any major issues with your truck.....mileage on it?

[dieselguy]

I have Uniroyal Laredo HD/H's. I run 55 - 60 psi based on the wear pattern. If I were to run 80 psi in them, 3 things would stand out
The truck would be a bit squirrely just driving it ... the ride would be unbearable, and I'd wear the center of the tread out way before I even got to the nubs on the outer treads. My actual pin weight is #2340.

[okierver]

no guys i just traded my 2008 f250 for this 2008 f350 dually king ranch no problems yet it only has 57.000 miles on it

[8e3k0]

I had a 2009 F350 dually and ran the rear tires at about 75 psi with results of excessive wear in the middle of the tread face. The last tires were Michelin AT2 and ran the pressures that were on the door jam sticker -- no problems with irregular wear after that.

[WeBeFulltime]

The door sticker on my 2012 F350 SRW calls for 80 rear and 60 front. That is what I run and it drives/rides GREAT. Have not noticed any irregular tire wear. Just had rotation done last week. 12,500 miles on truck. After rotation I had to "reprogram" the low pressure monitoring system since front/rear takes different pressure. Easy task.

[okierver]

thanks for the info guys thats great i came home tonite and on my door jam sticker it is 75psi cold front 69 psi cold rear thats what i took them to

[jlb27537]

That psi is at max load. I run my fronts @ 70-75psi and the rears @ 55-60psi.

You need to weight the truck, both loaded and unloaded and using the brand tire chart decide what is right for your truck.

The tire PSI ratings on the door jam sticker are if the truck is loaded to it's max GVWR.

[1retired06]

i run 75PSI in the rear tires when towing and have not experienced any abnormal wear.

[rohrmann]

I don't have a dually, but drove a number of them at work prior to retirement, and I seem to recall information on the sidewalls of the tires, two different max pressures, one when the tire is used as a single, and a lower pressure when the tire is used as a dually. Might be something to look for. I cut a pasted the following from the Tire Rack site where dual tires are discussed:

Light truck tires that are intended to be used in dual applications have two "Max Load" ratings branded on the tire's sidewall. This is because the load capacity rating of a tire serving duty in a "single" application is greater than the exact same tire being used in a "dual" application. For example, a LT235/85R16 Load Range E tire is rated to carry 3,042 pounds when inflated to 80 psi and used in a single application, but only 2,778 pounds when used in a dual tire application at the same inflation pressure.

This reduction in rated load capacity results in slightly larger tires being specified for the application that can better withstand the additional stresses experienced when a single tire goes flat and the three properly inflated remaining tires are required to temporarily carry the load at reduced speeds to remove the vehicle from immediate danger. This load reduction is not a concern for vehicles originally equipped with dual rear tires because the vehicle manufacturer factored it in when they specified the tire size for the vehicle.

[sola123]

okie..I have 53k on mine..no problems yet...but thinking of maybe a 2015 drw....

[Tom S.]

I run 50/55 psi unloaded and 55/60 psi loaded. From tire wear indication, I'm doing the right thing.