I have a rebuilt 2007 Dodge Ram 3500 Quad Cab 4x4 Dually. It came with four Brand new Toyo H/T Open Country LT 235/80 R17 10PR tires on the back. It had some different tires that was a different ply rating for the front two tires. It was really squirrely on the drive back. I put the matching tires on the front two and it seemed to straighten up right away. This past weekend I drove 1300 miles round-trip and picked up a 2000 Astro Fish and Ski Boat that weighs about 2300 pounds trailer and all. When I got home just about every tire on the back (all four) were wore down almost slick. The tires looked like they wore evenly. The worst one was on the passenger side towards the curb (outside tire). It is almost bald. The other three are wore down just about as bad.
I am a noob with Duallys. I was wondering if anyone had any insight on this. I aslo need to add that the tire says max load cold is 80psi for both single or dual wheel applications. Has anyone ever experienced anything like this? Are these the right kind of tires for my rig? If I have frame damage or a bent axle or some kind of problem from the po's wreck wouldn't the tires by wearing differently. The tires were low on air when I checked them. One had as low as about 50psi. the other three including the one that wore the worst had over 60psi in them. I now have 80 pounds in all six tires. Sorry for the long post. Any advice is welcome. Because I am a little leery of putting new tires on if they are going to wear that much tread in about a years worth of service. Thanks to all in advance.

George

 

Boy, it doesn't look like anybody uses this forum. I am the only one at the moment?

 

sorry for the slow replies, but you posted in the wrong section,

just because a tire has a max rating on it doesnt mean that it needs to be filled up to that, for best tire wear & ride you should follow the sticker on the inside of the door, IIRC it says something like 65psi front/ 80psi rear, but in a dually application, unless you have heavy load in the bed or a trailer with heave tounge weight, ther is no need to have 80psi in the tires, having that much pressure with no load or light loads will wear out the centers of the tires and make the rear very bouncy and unstable, 50 psi would be just fine and probably make it alot better to drive, we run them down to 30 psi sometimes in the rear for no load conditions, my 2500 i 40spi up front for best tire wear

 

I've never had any problem with tire wear on the dually trucks. It's kind of odd that those tires would be rated 80 psi single or dual. Most of the ones I've seen were 80 single and 55 or 65 dual. I usually ran 70-75 front and 50-55 rear, unless hauling heavy or towing, then I'd go up to 60-65 rear.

Jeff.

 

You mention rebuilt, what was rebuilt? Was the truck in an accident? Is the rear wheels out of alignment? The new tires, were they the correct rating? The tires should be inflated by that Dodge suggests, you usually can find that info in the driver door on a sticker.