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Old 05-01-2018, 09:38 AM   #1
Tbos
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Dually Rear Tire Pressure?

My Diesel F350 dually says 70 PSI rear and front 80 PSI. I currently run 75 in the rear. Should I up the pressure when my 5er is behind me?
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Old 05-01-2018, 10:29 AM   #2
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Are you sure of those numbers? I've got a 2016 F350 Dually 4x4 and I'm pretty sure the sticker says 75 front and 65 rear. It has the 17" tires/wheels on it
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Old 05-01-2018, 01:27 PM   #3
Tbos
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That’s what I get for trying to do it from memory. You are right the sticker says 75 front and 65 rear. Is that what you run in yours?
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Old 05-01-2018, 03:51 PM   #4
Big Boy w/ Big Toys
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Loaded or unloaded I run 80 psi all the way around. The only time I drop my tire pressure is if I travel certain dirt roads that tend to be a bit wash boardie.

IMHO why would you run anything but what the tire manufacturer has stamped on the tire. I hate that door sticker, as it does not take in to consideration any type of load on the truck, the speeds we drive or the temperatures that they are subjected to crossing Arizona. Empty I find that my DRW will wander a bit when the tire pressures are lower but Alaska does have some pretty nasty road grooves. As for tire wear I am approaching 60k on my NITTO AWT's with a good year plus left in them. I rotate once of year regardless of mileage.

My 2 cents for what it's worth
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Old 05-01-2018, 03:56 PM   #5
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Quote:
Originally Posted by Tbos View Post
That’s what I get for trying to do it from memory. You are right the sticker says 75 front and 65 rear. Is that what you run in yours?
Yes, that's what I run in mine. I can't remember the numbers exactly, but those numbers combined put the tire ratings over the GVWR of the truck...14K. One other thing about mine, it doesn't get loaded as heavily as some of you guys. I've got 5270 lbs of payload capacity and the loads that it sees is....
A 42 gallon aux tank with an electric pump and filter in the bed...150 lbs or so
Approx 42 gallons of diesel fuel in it...approx. 300 lbs
Tongue weight of my T.H. approx. 1250-1300 lbs
So even with a full fuel load and the trailer on plus the above stuff and a toolbox, we are at about 2000 lbs. Add in Peggy and I and we are 325 or so....

And before anyone asks.......I account for a little over 200 lbs of that 325!
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2016 F350 King Ranch Crew Cab Dually Diesel 4x4
2018 Grand Design Momentum 394M
2023 Suzuki GSX-S1000GT+
Excessive payload capacity is a wonderful thing

"If it ain't Fast....It ain't Fun"
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