Former FAM

Western WA.

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OK, this is all new to me so here goes...
After 15 years of talking, 2 years of kinda looking, 8-10 months of research and shopping, we finally bit the bullet and bought our first travel trailer...
I put new tires on the truck last November and since I've never pulled anything near this big before and I'm curious as to what pressure would be best to run on the truck.
I'm running Nitto Trail Grappler MT tires at 40-42 psi for normal driving. The max pressure on the tire is 80 psi @ 3640 lbs. What tire pressure should I be at with my truck loaded with me the wife 2 little kids, our big dumb dog, a tank of gas, and a 5000 lb (dry weight) trailer???
I'll be off next weekend so we're going to load up and get the actual weight a nearby state DOT scale.
thanks in advance, and I'm sure I'll have many more questions...
Dave
TT: 2012 Keystone Springdale 260 SRTWE
TV: 2005 Ford F-150 Lariat Supercrew 4X4
Equal-i-zer WD Hitch with Sway Control
Prodigy Brake Controller
Edge products Evo HT programer
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bicyclemark

Saint Paul, MN

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I run mine at 80 whenever towing or carrying a load. I get better handling and gas mileage.
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VintageRacer

Dundas, Ontario

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My door sticker tells me the pressures for full load, which happen to be 80 rear, 65 front, and that's what I run. But - your truck probably didn't come with the higher rated tires you have on it now, so that might not work for you. Easy solution is run the 80/65, it might be too high for theoretical idealness but the tires will be happy.
Brian
2005 F250 Supercab, Powerstroke, 5 speed automatic, 3.73 gears.
20 ft race car hauler, Lola T440 Formula Ford, NTM MK4 Sports Racer
1980 MCI MC-5C highway coach conversion
2004 Travelhawk 8' Truck Camper
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SWD

Land of Living Skies

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bicyclemark wrote: I run mine at 80 whenever towing or carrying a load. I get better handling and gas mileage.
X2
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Former FAM

Western WA.

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Front and rear?
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Old-Biscuit

Across the USA

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When towing..run the rear tires at MAX PSI (80#) and front tires at 65psi.
Then when you get actual weights for truck and for truck/trailer combo you can go to tire mfg. website and look at tire loading charts and adjust tire pressures according to actual load.
Also.....check data sticker on door post/glove box and hat is stated in your owners manual for recommended psi for towing.
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goducks10

Keizer OR

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What rims do you have?
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Former FAM

Western WA.

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the stock 18 inch Lariat aluminum rims
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Terryallan

Foothills NC

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Former FAM wrote: the stock 18 inch Lariat aluminum rims
You better check the max psi for the rims. I'm bettin, 80 psi is way too much. You may have more tire that you got rim.
Terry & Shay
Coachman Apex 288BH.
04 F150, 5.4, Lariat SuperCab
Lazy Campers
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wcjeep

Tacoma, Wa

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Find the max pressure for the rims.
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