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 > Dually tire pressure

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klr650goldwing

minnesota

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Posted: 02/26/20 02:48pm Link  |  Quote  |  Print  |  Notify Moderator

We just bought a 2017 F350 dually CC LB 6.7 4X4. We pull a 5th wheel that weighs about 14,000 lb. This is our first dually. We've heard that tire pressure doesn't need to be as high as our old truck. So we are wondering what pressures you all run in your truck, or what you recommend for our truck.


2014 Grand Design Solitude 369RL
2017 F350 6.7 DRW CC LB 4X4
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PA12DRVR

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Posted: 02/26/20 03:08pm Link  |  Quote  |  Print  |  Notify Moderator

I had a 2004 F350 CC LB DRW 4x4, don't recall the brand of tires, but seem to recall the max inflation per tire sidewall was 120psi. I usually ran at that level when towing my then 16,000# Fifth wheel, dropped to about 100 empty.

All FWIW..


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azdryheat

Tucson, AZ

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Posted: 02/26/20 03:27pm Link  |  Quote  |  Print  |  Notify Moderator

My dually door sticker calls for 65 psi in the rear (70 in the front), which is what I run with/without the trailer. My toy hauler is 5,000 lbs heavier than yours and has a hitch weight of 3500 lbs. 65 psi works fine for my setup. Go with what your manual or door sticker says.


2013 Chevy 3500HD CC dually
2014 Voltage 3600 toy hauler
2011 Harley Ultra Limited
2016 RZR 900


Cummins12V98

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Posted: 02/26/20 03:55pm Link  |  Quote  |  Print  |  Notify Moderator

You will get many answers even ones you didn’t even ask. Here is the truth unless you want to blindly go by the door sticker.

Load your truck and RV with everything!!! This includes fuel and passengers.

Go to your nearest truck stop that has CAT Scales. Weigh your trucks front and rear axle then each RV axle.

With these weights you can PROPERLY inflate ALL your tires.

Look up the tire size and load range weight/inflation chart for your tire. For the front tires add 10psi to what the chart says the psi should be. For the rears add 5psi.

You will get the best possible tread wear, traction and ride when towing.

Solo leave the fronts and reduce the rears to 35psi.


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Lwiddis

Owens River Road, California

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Posted: 02/26/20 03:56pm Link  |  Quote  |  Print  |  Notify Moderator

I suggest following the manufacturer’s recommendation.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


Me Again

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Posted: 02/26/20 04:16pm Link  |  Quote  |  Print  |  Notify Moderator

^^^ What Ron Said! FYI no duallie needs more that 65 in the rear wheels. If the fronts are 17" tires and have max load at 80 psi, I would running them at 80 PSI 24/7/365. With my SRW I leave the 18" fronts at just over 60 PSI and vary the rears for empty at 42-44 psi to 65-80 depending on load. That is 80 with the 5th wheel and around 65 with the bumper pull. Or 80 PSI with a 3K load of wall blocks in the truck bed.

Here is a 235/80R17E inflation chart for both single(Front) and dual(rear).

https://tirepressure.com/lt235-80r17-tire-pressure


2015 RAM 3500 CC SB SRW Our Rig New 2017 Bighorn 3575el. Commuter trailer 2019 Laredo 225MK. Retired and enjoying it!


VoodooMedicineMan

Illinois

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Posted: 02/26/20 05:02pm Link  |  Quote  |  Print  |  Notify Moderator

My 05 Ford dually diesel door sticker says 60 psi in all tires


Bill and Joey the dog


Me Again

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Posted: 02/26/20 05:20pm Link  |  Quote  |  Print  |  Notify Moderator

VoodooMedicineMan wrote:

My 05 Ford dually diesel door sticker says 60 psi in all tires


How do the front tires wear at that inflation. Chris

Cummins12V98

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Posted: 02/26/20 05:26pm Link  |  Quote  |  Print  |  Notify Moderator

Me Again wrote:

VoodooMedicineMan wrote:

My 05 Ford dually diesel door sticker says 60 psi in all tires


How do the front tires wear at that inflation. Chris


I guarantee they wear the edges at that low of PSI.

VoodooMedicineMan

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Posted: 02/26/20 05:50pm Link  |  Quote  |  Print  |  Notify Moderator

I didn't use a gauge but they seem fine.

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