Tire Pressures?

At the risk of giving 1/2 ton truck owners information they probably don't want to hear, the rear tires aren't inflated much (and generally aren't able to be) because the trucks really can't carry that much weight.

HD trucks and above have payloads that generally start at 2X what a half ton does. As the capacity goes up, the need to carry said capacity goes up and more capable tires (with higher PSI ratings) are needed.

demiles wrote:
I’ve noticed that 1/2 ton trucks have the same recommended tire pressures front and rear while 3/4 ton and up always have a pressure offset front to rear. Why don’t they run a offset on 1/2 ton trucks? What do you think?

My Super Duty requires 65psi both front and back.

I thought your XD truck was supposed to be a 3/4 ton.

On my 2014 F150 4x4 HDPP truck which has OEM LT245/75R17 LRE tires, the yellow sticker calls for 55# psi in the front tires, and 60# psi in the rear tires.

Also, the FAWR is 4050#, and the RAWR is 4800#.

KD4UPL wrote:
1/2 ton trucks tend to carry about the same weight on the front and rear axles when fully loaded. Look at the door sticker on the jamb and you will see the FAWR and RAWR are pretty close.
2500 and 3500 trucks are designed to carry a lot more weight in the bed so their RAWR is generally several thousand pounds higher than the FAWR, thus the tires need more air. The front of either truck generally weighs about the same no matter what since the cab, hood, engine, etc. are basically the same across 1500 to 3500.

I would still expect to see a psi differential on the high GVWR 1/2 tons which can see a 1000 lbs + difference between axles.

KD4UPL wrote:
1/2 ton trucks tend to carry about the same weight on the front and rear axles when fully loaded. Look at the door sticker on the jamb and you will see the FAWR and RAWR are pretty close.
2500 and 3500 trucks are designed to carry a lot more weight in the bed so their RAWR is generally several thousand pounds higher than the FAWR, thus the tires need more air. The front of either truck generally weighs about the same no matter what since the cab, hood, engine, etc. are basically the same across 1500 to 3500.

Unless it's a diesel or 4 wheel drive. Then the front is heavier than a gasser with 2wd. My 1 ton rear tire pressure is 10 psi higher than the front.

1/2 ton trucks tend to carry about the same weight on the front and rear axles when fully loaded. Look at the door sticker on the jamb and you will see the FAWR and RAWR are pretty close.
2500 and 3500 trucks are designed to carry a lot more weight in the bed so their RAWR is generally several thousand pounds higher than the FAWR, thus the tires need more air. The front of either truck generally weighs about the same no matter what since the cab, hood, engine, etc. are basically the same across 1500 to 3500.

I have caused undue wear on tires because I overinflated, and underinflated tires. The absolute best way to adjust pressure is by taking the truck ready to roll over a scale that scales each tire... or at least measures both fronts and both backs. Then look at the tire specs and see what pressure you need to carry the load you have.