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Old 12-05-2013, 01:16 AM   #1
jfaberna
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TV tire pressure recommendations

I noticed that my TV, a RAM 3500 dually, has a tire pressure sticker in the door that says 70 LB front and 65 LB rear. They came 70 front and 80 rear. I set everything cold to 70 front and 65 rear(all 4). Is that right??
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Old 12-05-2013, 01:48 AM   #2
H. John Kohl
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I purchased a tire depth gauge and after 10K miles on the tires I noticed the duals wearing in the center. Therefore I reduced their pressure to 55 and run the steering tires at 65.
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Old 12-05-2013, 06:21 AM   #3
Art-n-Marge
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jfaberna,

The OEM weight stickers are based on the weight ratings for your TV with the referenced tire sizes. On my F-250 truck, I used one set of pressure on the size tires that came with the truck. When I modified the rear end to use the F-350 spring set, I also upgraded to the tires for an F-350 and the pressure changed to match these tires to the new suspension (they were different, but so were the tire ratings).

You are doing the right thing to start with on the tire pressure, but like H. John Kohl states, your driving style, load conditions and maybe even the roads you drive on just might change things. Start with the pressures you did, then monitor the tires.

This goes for the trailer, too. My Monty is not towed at the maximum weight ratings, but I started with the maximum tire pressure stated on the RVIA sticker and the tires are wearing well, so I did NOT reduce the pressure because I don't see a need to since the tires are doing fine so far. It turns out now that I will be changing the RV tires soon (they're getting old) and will start all over again with the recommended pressure and monitor them once again on the new set.
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Old 12-08-2013, 05:48 AM   #4
jlb27537
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On my '12 Ram DRW I have about 3200 lbs of pin weight.

I run 55-58 in the rear's and 70-73 in the front. IF I drive it empty for any length of time, I drop the back down to 45-50.

My front loaded is 4940lbs empty 4920lbs
My rear loaded is 6720lbs empty is 3540lbs

You should run across the scales to get your actual axle weights. I have read that the front axle design is different. But since yours is a 2x4 it will be different from mine.

Jim
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Old 12-08-2013, 06:04 AM   #5
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I run mine according to the door sticker when towing. Works out well. I reduce about 5 lbs when I am going to run empty for awhile. Just watch your rear duals so they don't bulge and contact each other. Will rub a blowout.
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Old 12-08-2013, 07:31 AM   #6
oldelmer1
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I set mine at 65 front and back. But mine isn't a daily driver, it pulls the camper, or sits in the garage. But I have to admit, when I do take it out to get fuel or what ever, it rides rough at 65# all around..
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Old 12-08-2013, 01:21 PM   #7
Devildog
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I run mine according to the door sticker when towing. Works out well. I reduce about 5 lbs when I am going to run empty for awhile. Just watch your rear duals so they don't bulge and contact each other. Will rub a blowout.
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Old 12-09-2013, 12:25 PM   #8
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I run 73 upfront all the time and in the rear duals 38psi empty and 65 towing. I did run 50 empty in the rear but, noticed the center of the tires were wearing real thin, so I lowered them to 38psi.
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Old 12-11-2013, 09:26 AM   #9
ols1932
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When towing, I set mine at 80 psi cold on the rear and 65 psi cold on the front. Usually run that way empty also.

Orv
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Old 12-11-2013, 10:28 AM   #10
Tom S.
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Orv, that's where yours should be set loaded, but the OP has a dually and the rears are usually set lower, around 65.
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Old 12-11-2013, 01:20 PM   #11
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Your tire manufacturer probably has an inflation table online. I took mine to the scales and set the pressure according to the table. Having said that when I put the slide in camper in I run the duals at 75lbs so the sidewall is firmer to make it more comfortable even though it only calls for about 55lbs.
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Old 12-14-2013, 10:27 PM   #12
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I run 80 all the time
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Old 12-15-2013, 11:35 AM   #13
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Every rig transfers weight when a 5er is attached, depending on wheelbase of TV and pin weight of 5er. John Kohl IMHO is spot on. There is trial and error until you reach what your rig demands. I'm in that process now with a new 5er and a new set of tires on the TV. You could just run the tires at max pressure and replace them more often, or seek the set up that not only makes them last, is the safest. Again IMHO.
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Old 12-15-2013, 01:00 PM   #14
Irlpguy
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The supplemental tire sticker on my 2012 Dodge says to inflate to:

Min Load = 2 passengers and 200 lb load - Front 65 & Rear 40

Max Load = Refers to the sticker that has the GAWR and GVWR on it for Max load - Front 70 & Rear 65

I am not at either GAWR or GVWR so I run mine at Front 65 & Rear 60. I run those pressures whether loaded or not. Tire wear is normal and that is what I did on my old Dodge for 10 years and got good mileage from my tires.

I have had a dually for 12 years, it rides like a truck because it is a truck, I am fine with that. The tire pressure I use is capable of the additional weight of the pin, I am not going to mess around changing tire pressures loaded or unloaded.
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Old 12-16-2013, 04:32 AM   #15
1retired06
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For my DRW, 75 front, 65 rear.
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Old 12-17-2013, 01:49 PM   #16
jfaberna
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When I went up to pick up my Monty and do the PDI, the temperature changed from when I set it back in NC. With the colder temp, then fronts were 65 and the rears were 58 cold. At highway speeds with outside temps
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