This question is on a 2016 F350 superduty Dually. The tires are LT245/75R17E Goodyear,s.Due to the stiff suspension, I would like to reduce the tire pressure to a safe, but more comfortable ride.when not towing. I run 65 rear and 75 front.per Ford's recommendation's when towing.I have looked for a load chart for these tires, but have had no luck.The truck weighs out at 5260 front, and 4280 back.I have a aux tank and carry extra fuel. I will be making a non towing run of about 1300 miles in a few days and would like some info on the minimum PSI I could safely run in these tires on this upcoming trip.Thanks

Open the drivers door and look for the build placard.. a sticker that gives you weights and tire info. Now I'm not a tire expert but what is on the tires themselves is MAX pressures cold carrying a load. I always use Max pressures when hauling a load that is branded on the tire itself. Being a Dually the rears are even more tough to get to.. right?...that inside tire valve is a pain to get to. But where I'm going with this is....I run mine at MAX psi when loaded as branded on the tire then I air them down to those posted on the placard for normal use. So say your running 80psi (as mine are branded) max load with the RV but the placard says 65 front and 50 rear respectively unloaded. So you have a new truck with the stock tires... that answer is right there on the sticker unloaded and on the tire as max loaded. Now if your running e rated tires, which a Dually should have, I would not run them at max unloaded which is what your asking. The ride is terrible..air them down to the posted sticker...at least that's what I do...good luck!Where did you find this "FORD" recommended tire pressure for towing at?

You can use a tire inflation chart. Estimate what your truck weights empty, and go from there. For your size tire, this is what it says (note, all charts are an industry standard)LT245/75R17 Single35 PSI = 1770 Lbs40 PSI = 1945 Lbs45 PSI = 2110 Lbs50 PSI = 2270 Lbs55 PSI = 2430 Lbs60 PSI = 2580 Lbs65 PSI = 2755 Lbs70 PSI = 2875 Lbs75 PSI = 3020 Lbs80 PSI = 3195 LbsLT245/75R17 Dual 35 PSI = 1610 Lbs40 PSI = 1770 Lbs45 PSI = 1920 Lbs50 PSI = 2040 Lbs55 PSI = 2210 Lbs60 PSI = 2350 Lbs65 PSI = 2535 Lbs70 PSI = 2615 Lbs75 PSI = 2750 Lbs80 PSI = 2910 Lbs

ChooChoo...So to clarify this is unloaded cold pressures? Not max loaded cold as branded on the tire itself? What's the chart for 16 inch? Where can I find that?

This is for my 07 Ram 3500 running LT235/80/17E unloaded is 65psi front and 45psi for the rear duals, not same size tires you have but might give a starting point to go by, if tire place card on your Ford door post does not give a unloaded tire pressure to use.

KKELLER14K wrote:ChooChoo...So to clarify this is unloaded cold pressures? Not max loaded cold as branded on the tire itself?ChooChooMan74 wrote:You can use a tire inflation chart. Estimate what your truck weights empty, and go from there. For your size tire, this is what it says (note, all charts are an industry standard)LT245/75R17 Single35 PSI = 1770 Lbs40 PSI = 1945 Lbs45 PSI = 2110 Lbs50 PSI = 2270 Lbs55 PSI = 2430 Lbs60 PSI = 2580 Lbs65 PSI = 2755 Lbs70 PSI = 2875 Lbs75 PSI = 3020 Lbs80 PSI = 3195 LbsLT245/75R17 Dual 35 PSI = 1610 Lbs40 PSI = 1770 Lbs45 PSI = 1920 Lbs50 PSI = 2040 Lbs55 PSI = 2210 Lbs60 PSI = 2350 Lbs65 PSI = 2535 Lbs70 PSI = 2615 Lbs75 PSI = 2750 Lbs80 PSI = 2910 LbsThe inflation chart above is what each tire will carry at that psi.So if your empty rear axle weight is 3,500#.3,500/4=875# carried by each tire, so likely start at 40 psi, and do a tape test or chalk test.

minimum tire pressure for non towing. | Good Sam Community

Atlee
Explorer II
Aug 08, 2016
The door sticker for my F150 4x4 w/ HD Pkg calls for 55# front and 60# in the rear. I don't change the air when I'm pulling. The OEM tires are LT245/75R17 LRE.
Cummins12V98
Explorer III
Aug 07, 2016
Me Again wrote:
35 pounds in a dually empty will improve ride a lot. On RAM 3500's the tire pressure indicator system does not alarm. Chris

I run 80 front ALL the time, rear 65 loaded at max RAWR and 35 solo rear.

40K on these.
FishOnOne
Nomad
Aug 07, 2016
I wouldn't run less than 60 psi on the front tires. Anything less and tire wear seams to dramatically increase from my observations.
Me_Again
Explorer III
Aug 06, 2016
BigToe wrote:
peaeye1 wrote:
This question is on a 2016 F350 superduty Dually. The tires are LT245/75R17E Goodyear

The previously provided (and excellent) link above is produced by Toyo. For an equivalent document produced by Goodyear, see:

https://www.goodyeartrucktires.com/pdf/resources/publications/2010_loadinflation.pdf

The load inflation tables have the same values for the size you mentioned, but in case you wanted assurance from the manufacture of your specific brand of tire, you have a resource now from Goodyear.

Inflation tables are standard across the industry for auto and truck tires for any given size. Now with ST trailer tires the rules are all being thrown out the door.

Chris
BigToe
Explorer
Aug 06, 2016
peaeye1 wrote:
This question is on a 2016 F350 superduty Dually. The tires are LT245/75R17E Goodyear

The previously provided (and excellent) link above is produced by Toyo. For an equivalent document produced by Goodyear, see:

https://www.goodyeartrucktires.com/pdf/resources/publications/2010_loadinflation.pdf

The load inflation tables have the same values for the size you mentioned, but in case you wanted assurance from the manufacture of your specific brand of tire, you have a resource now from Goodyear.
peaeye1
Explorer
Aug 06, 2016
ChooChooMan74 wrote:
Load Inflation and Tire Info PDF File

This is my favorite Load Inflation Chart on the internet.

Thanks, this is a great chart, some very useful info.
peaeye1
Explorer
Aug 06, 2016
Me Again wrote:
peaeye1 wrote:
Me Again wrote:
Why so high in the rear, hardly worth the trouble.

I would put the fronts at 65-70 all the time, run 35 in the rear empty and 65 when towing.

No trouble to me.....but then my life is not a hectic as some. I just want to find a PSI for hi speed non towing, interstate running.

6440 pounds of capacity on the rear axle at 35 pounds inflation, or 2 X + what you need. And you are worried????? Chris

I am not worried about weight, just do not want any heat buildup with to little PSI at high speed long runs.Just calm down:R
Me_Again
Explorer III
Aug 05, 2016
peaeye1 wrote:
Me Again wrote:
Why so high in the rear, hardly worth the trouble.

I would put the fronts at 65-70 all the time, run 35 in the rear empty and 65 when towing.

No trouble to me.....but then my life is not a hectic as some. I just want to find a PSI for hi speed non towing, interstate running.

6440 pounds of capacity on the rear axle at 35 pounds inflation, or 2 X + what you need. And you are worried????? Chris
peaeye1
Explorer
Aug 05, 2016
Me Again wrote:
Why so high in the rear, hardly worth the trouble.

I would put the fronts at 65-70 all the time, run 35 in the rear empty and 65 when towing.

No trouble to me.....but then my life is not a hectic as some. I just want to find a PSI for hi speed non towing, interstate running.
ChooChooMan74
Explorer
Aug 05, 2016
Load Inflation and Tire Info PDF File

This is my favorite Load Inflation Chart on the internet.