What tire pressure

[AWay]

My first dually. Loaded I'll be pulling a 15,000 lb 5th wheel. Came with American General tires, and the door sticker for tire inflation says loaded to run 60 lbs in the front and 65 lbs in the rears.



Question is for you all, are you running the 60 and 65 or do you suggest increasing it? When I had the valve stems changed to metal, the tire place put 70 and 75 in them.



Also, if your not towing often, do you decrease pressure to light load?

 

[Hoefler]

I run 65 in the front all the time. In the rear I run 40 most of the time, I pull a 16' enclosed trailer with about 6k on it. It is behind me 95% of the time. A couple of times a year I pull a 5ver that weighs in between 13k and 15k, depending what is available when I rent one. With the 5ver I run the rear up to 65. I rotate them every 7500 miles and have been real even wear. I also have the Generals on my truck. I live in the Ozark mountains, lots of hills, sharp curves, and crappy roads. I am setting right on 24,000 miles and it looks like I might get 30,000 out of them. Worn out or not, they are getting replaced before this winter. They are totally useless in the snow!

 

[B.G. Smith]

I have the same tire, I would run the maximum recommended pressure for that tire on the rear when loaded,(should be on tire) letting the pressure down when empty makes for a better ride but it sure is a lot of trouble. bg

 

[WestTN]

I keep my tires at no less than 60psi at all times. When carrying the camper they go to 85. After studying the latest tire specifications charts, I always keep an extra 5psi. the ride is only changed very slightly, but the tire wear is excellent. I got 87,000 miles on the original Michelins and there were no wear bands showing on any tire. I changed them because we do travel quite a bit and I don't care for hydroplaning. Had those tires been driven to the limit, they would likely have lasted 100,000 miles. Low air pressure is not your friend!

I do have and use a Jacobs exhaust which I use even in town. The brakes are still original at almost 110,000 miles.

 

[TowPro]

I would put the truck on a scale with the trailer attached. Get the weight on the rear wheels, divide it by 4 and you know the weight on each tire. Find a tire lbs/psi chart (dodge used to give them to you, but I don't think I saw one in my 06) and see what PSI they say to run for the weight you are carrying. running more pressure lowers your contact patch and wears out the center of the tire (also can cause hydroplaining). to low a pressure and your tire can over heat.



If you can't find the chart, check out generals website or call them, they should want to supply you that info.