Wondering what difference in tire pressure are you running front to rear. I have a 1999 CC LB 4x4 with a v10 with 180k on it and have always had to run lower on the rear with a empty bed. Most of the time I'm empty. If I don't the rear centers wear a lot quicker.


I ran KO's most of those miles and recently switch to Geolanders. The tires are 315x75x16. BTW the geolanders are doing great. A better rain tire, smoother and much more quiet. 6k on them so far and very little wear. Time will tell, I would get 55-60k out of the KO's.


Thanks,
Rob

 

My Ford sticker says front (50 psi) / rear (80 psi) . I use 60 psi at front .


Tire pressure depends on what kind of task the truck is doing . Mine hauls a 5th wheel trailer with a hitch weight approx. 3000 lbs. Same goes for anyone carrying a slide-in camper . Though , if you just hauling only hunting or fishing gear , you may have latitude to change tire pressures .

 

Most of the time we are running empty, that was the basis of my question.


thanks

 

Tire pressure on trucks is different than a car. Trucks can carry a lot of different weights so if your tires are wearing out in the middle they they are over inflated which is bad because thats the tread that is in contact with the road. if they wear on the out and inside tread they they are under inflated which is bad for fuel milage. The fronts should be the same most of the time. It's the rears that carry the most weight. If you are unloaded than you can reduce the tire pressure to get a better ride. I wouldn't go below #50. the owners manual should have more details on this. Never go above the max pressure that is listed on the tire.

 

My KO's have about 50 front, 35 rear unloaded and bump them up as needed for loads.

 

When I went to my Toyo AT2s 35x12.5/18 I called Toyo. I was told 55psi rear 65psi front. When loaded run 65psi rear to meet factory spec.

 

The sticker from the factory would be fine if you were using oem tires, size and mfg with the oem wheels.

You aren't so that sort of goes out the window. Reason being is your tire is of a different size and you have not stated whether or not you are running a stock wheel or wider than factory. All things that impact the sidewall bulge which then crowns across the tread. Example is 7" wide wheel with an 11.50 wide tire will bulge the sidewall and then bulge/crown the tread. The more air you run with that type of set up the worse it gets. A wider wheel 8 or 10 inch with that tire or a 12.50 inch wide tire would be more suitable if you are concerned with hauling and towing etc...and the proper psi. But again once you start to move away from the oem size things change. Some tires have a stiffer sidewall and just the general composition is different from one brand to the other that there is no real exact answer here.
Do the chalk test and make sure you are getting a uniform wear across the tread. That is the best bet. If you put a load on and the tires look like they are starving for some air...then you know what to do.

Good luck