petanqueur99
Chambly, Quebec
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I read two conflicting information on the tire pressure for the TV when towing. One recommendation was 80 psi front axe and 72 psi (90% of front axle). Another recommendation is just the opposite, 72 front and 80 back.
There must be a third information, I suppose.
The TV tires are 235/85R16.
TIA,
Petanqueur99
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donn0128
Pronounced Ore-gun
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What ever you choose it is highly likely that the tires on the rear will be over loaded. If this is a GM product the rating is 3064 each at 80PSI. I cannot imagine a 38 foot fiver with a pin of less than 3500 pounds.
Donn
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JMTTS
52.1122 N, 106.5625 W
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IN my case I run 80# all the way around
J & M
2005 Cardinal 33TS LX with TrailAir
2004 Chevrolet Silverado 3500 4x4 DRW D/A (LLY) Crew Cab
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dsigmon1
Conover NC
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Not sure where that info came from. On a 5th wheel your weight is on the rear axle. It's not a weight distributing hitch so no weight is transferred to the front.
72 might be OK on the front but run the max psi for your rear tires.
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fordsooperdooty
Orange Kounty Kalifornia
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The tire pressue rating is listed on the driver side door sill of your truck, not to exceed the actual tire pressure max listed on the tire itself. Stay safe!
A Jayco is not just an RV, it's a way of life! 
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kaydeejay
SE Michigan, USA
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donn0128 wrote:What ever you choose it is highly likely that the tires on the rear will be over loaded. If this is a GM product the rating is 3064 each at 80PSI. I cannot imagine a 38 foot fiver with a pin of less than 3500 pounds. OP's profile says he has a 1999 Ford F350 dually. In which case his weights are probably OK.
That said, I agree he should go by the pressures listed on his door label up to the max on the tire sidewall.
Keith J, Retired from GM Engineering
1999 Sunnybrook 27RKFS Fiver
2005 GMC Sierra 2500HD SLE 2WD/CC/SB/DA, 52 gal Titan tank, Bilsteins, Line-X, Westin steps, Prodigy, Retrax, 16K Superglide, 5th-Airborne pin box, Multi-vex mirrors, TST TPMS.
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BB_TX
McKinney, Texas
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Your tires are going to list a maximum load rating at a certain max pressure, probably 80#. That is what you want to run. As you lower the pressure, there will be more flexing of the tire sidewalls. More flexing = more heat.
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Turbo Diesel Dude
Green Mountain, NC
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I run my front tires according to the door sticker. I have Tire Pressure Sensors on my truck and when empty, 55 psi in the rear (2500 CTD Ram). Low pressure lite stays lit at all times. Only goes out when at 70 front, 80 rear. I just ignore it.
charles weidman
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fly-boy
Los Angeles, CA
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Joined: 11/05/2004
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run 80psi in the back and run 60-65psi in the front-
You can run more in the front but you don't need it- the 60psi in the front will make the ride a little smoother.
2008 GMC 3500 SLT Duramax
2009 WW HKD plus 4 feet
2008 Custom Rhino
2005 CRF 450
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petanqueur99
Chambly, Quebec
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"The tire pressure rating is listed on the driver side door sill of your truck, not to exceed the actual tire pressure max listed on the tire itself."
The numbers listed on the driver side door sill must refer to when the truck is empty and not towing. I'll use those numbers after I complete my long trips to and back from Florida.
When towing, then, I'll go with 80 psi back wheels and I'll experiment from 65 to 80 psi for the front wheels.
At least, this is what I got from yours responses, which I thank all of you who led me to this conclusion.
Have a good day,
Petanqueur99
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