Adjusting Tire PSI
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4wd High
Joined: Jul 2024
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Adjusting Tire PSI
We got a "new to us" 2019 Ford dually f-350 a couple months ago. We'll be towing our 4 Horse Elite Horse trailer with living quarters about half the time we use it (won't be adjusting tire pressure every trip).
This was an upgrade from a 2004 Ford dually f-350. I was expecting the ride to be a little smoother, considering the truck is a lot newer. But it's not! There's lot to like about this truck, but dang - the ride is rough.
I have read that running the tires a little lower than what's recommended on the sidewall will help make for a smoother ride?
Right now we're often hauling in the Texas heat.
I see some folks put more air in the rear tires?
Any suggestions?
Should we also run the horse trailer tires a little lower than suggested on the tire?
If so, as for the truck and trailer - how many pounds lower than what's recommended on the tire?
TIA!
This was an upgrade from a 2004 Ford dually f-350. I was expecting the ride to be a little smoother, considering the truck is a lot newer. But it's not! There's lot to like about this truck, but dang - the ride is rough.
I have read that running the tires a little lower than what's recommended on the sidewall will help make for a smoother ride?
Right now we're often hauling in the Texas heat.
I see some folks put more air in the rear tires?
Any suggestions?
Should we also run the horse trailer tires a little lower than suggested on the tire?
If so, as for the truck and trailer - how many pounds lower than what's recommended on the tire?
TIA!
Last edited by cre8ivecowgirl; Aug 2, 2024 at 01:54 PM.
Moderator
Joined: Aug 2002
Posts: 6,104
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From: Southern California
IMHO, when carrying a load of that much weight, its not a good thing to mess with the tire pressures outside of the mfg specs..... while true, the ride will get a little softer for small incursions, without a load ok.....and it's best to measure the depth of tread across the tire face to get 100% even wear...that verifies you are at the correct pressure but, with a load, you are looking at spontaneous failure caused by underinflation.
Hotshot
Joined: Oct 2006
Posts: 10,182
Likes: 8,052
From: Texas
We got a "new to us" 2019 Ford dually f-350 a couple months ago. We'll be towing our 4 Horse Elite Horse trailer with living quarters about half the time we use it (won't be adjusting tire pressure every trip).
This was an upgrade from a 2004 Ford dually f-350. I was expecting the ride to be a little smoother, considering the truck is a lot newer. But it's not! There's lot to like about this truck, but dang - the ride is rough.
I have read that running the tires a little lower than what's recommended on the sidewall will help make for a smoother ride?
Right now we're often hauling in the Texas heat.
I see some folks put more air in the rear tires?
Any suggestions?
Should we also run the horse trailer tires a little lower than suggested on the tire?
If so, as for the truck and trailer - how many pounds lower than what's recommended on the tire?
TIA!
This was an upgrade from a 2004 Ford dually f-350. I was expecting the ride to be a little smoother, considering the truck is a lot newer. But it's not! There's lot to like about this truck, but dang - the ride is rough.
I have read that running the tires a little lower than what's recommended on the sidewall will help make for a smoother ride?
Right now we're often hauling in the Texas heat.
I see some folks put more air in the rear tires?
Any suggestions?
Should we also run the horse trailer tires a little lower than suggested on the tire?
If so, as for the truck and trailer - how many pounds lower than what's recommended on the tire?
TIA!
I ran 75 PSI front and 65 PSI in the rears. Generally had between 3000 and 3500 pounds pin weight. Kept the tires on thetrailer at 85 PSI, which was max for the LR “E” if I remember correctly.
Good luck in your quest.
Edit: I can’t get the link to post. But, it was a “ Shocker Hitch” for a gooseneck trailer. If you google it, it should show up for you.
Fleet Mechanic
Joined: Feb 2023
Posts: 1,924
Likes: 817
Trailer tires should be set to max psi(cold of course)when carrying a load and as a rule of thumb rear tow tires should be set to max when towing anything, but a lot of people adjust the psi depending on how much weight is on the back end so that decision is up to you.
My max psi is 80 and when towing my 6500# bumper pull I've run 70 front and 75 back and when unloaded it's 70 front/65 back and if I were to tow anything heavier than 6500lbs I'd set the rears to max 80 just to play it safe. If you want a better ride look into those silicon cab mounts and better quality shocks imho.
My max psi is 80 and when towing my 6500# bumper pull I've run 70 front and 75 back and when unloaded it's 70 front/65 back and if I were to tow anything heavier than 6500lbs I'd set the rears to max 80 just to play it safe. If you want a better ride look into those silicon cab mounts and better quality shocks imho.
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