Tire Air Pressure

[CurtKehler]

Hi All,

Does anyone know what kind of tire air pressure is best when hauling a heavy load in the box? I have an FX-4 so i've got the rugged trail offroad tires. Should i pump them up to max psi?

Thanks

[Galaxy]

Try it and see what happens!! Not gonna hurt a thing and then you'll find out what works best for you!! With my truck, I was airing up to 48-50 psi on the rear tires when pulling my trailer (I run 35 all 4 corners otherwise) only to discover this accomplished nothing but to stiffen up the ride. There was no performace/handling increase from increasing the air pressure, so, I stopped doing it. Every tire and every truck combo is going to be different so give it a shot and play with different settings until you find something you like...Like I said, you're not gonna hurt a thing.

[Red4]

Originally Posted by CurtKehler

Hi All,

Does anyone know what kind of tire air pressure is best when hauling a heavy load in the box? I have an FX-4 so i've got the rugged trail offroad tires. Should i pump them up to max psi?

Thanks

When I tow my trailer, it is at max PSI - 35. (same tires as you)

[kingfish51]

If that is the max for the tires, they should be at the max all the time, towing or not.

[bxstang2000]

When I towed my trailer last week I kept my tires at 35psi with no problems. I also have the rugged FX4 tires.

[CurtKehler]

Thanks guys. I usually have my tires set at 35 psi but get quite the bulge in them when loaded down. I'll try running max psi next time and see how it handles.

[kingfish51]

I believe 35 is the max for those tires. If you are worried about the load, you should get an LT tire in place of those passenger car tires.

[mikeast]

Get LT rated tires ", for towing there night and day difference . i run nitrogen at 80 psi in my wranglers . i pull a 24" travel trailer .