Need advice. Mostly stock/normal usually empty weight.

I'm running BFGoodrich LT265/75R/16 (came with the truck); load range E. Sidewall says inflate to 80PSI max.

Inside door of says: LT245/75/16-E, Front: 50psi, Rear: 80psi

QUESTION: For my set-up and normal load, what is good safe PSI?

 

work at a tire shop when installing changing tires we inflate 5 to 10 psi below what is called for

 

Forget the door sill. Always follow the tire manufactures reconmendation listed on the sidewall of said tire. I usually play with a bit lower pressure if empty. But when loaded and towing................ max psi on the sidewall.

 

What is called for on the tire? or What is called for on the door of the truck?

 

I run about 60 psi all around if I'm not planning to haul anything heavy. I air them up to max in the rear and about 70 in the front to haul heavy or pull heavy trailers>

 

Thanks, yall! Prep'ing for a 2K road trip; just a camper shell and luggage (and #10 wife); will use about 65psi in all fours.

 

I just asked that same question at the goodyear place that was doing the alignment on my wife's van.
I had the tires to 42psi
Sidewall said max 44psi
Navy exchange tire shop that balanced and rotated them said 32psi
The Gemini Goodyear tire guy said that for all normal driving to go with the doorsill manufacturers settings because that's the way they set up the suspension. but if you've done mods to your vehicle and "screwed up the engineering anyway" to keep them 5 to 6 psi under max on tire.

He also said that the nitrogen filling is a hype. Not needed unless you are seriously road racing and even then you won't be going long enough before crashing or going to jail for it to make a difference.

 

The number on the tire sidewall is the maximum pressure. The number on the door is what the manufacture has determined to work best with stock tire size(taking into account handling, ride, braking, etc).

The more pressure that you put into a tire, the more weight it can support. If your tires are wearing on the outside, then you have them underinflated, if they are wearing on the inside, they are overinflated. On my truck with 245/75/16's, I try to run 70psi on all of the tires. The truck tends to have about 1000lbs of extra weight on it at any given time and is often loaded to gvw. By running this pressure, I do not have to air up when I load up the truck but it also drives reasonably well unloaded.

 

If you're running empty most of the time the fronts need to be about 10 psi higher than the rears to compensate for the heavy diesel engine.
65 front, 55 rear works for me.

 

Are you running manufacture recommended tires or larger?

 

Larger.....

 

Inncorrect the sidewall states that the tire will carry X amount of weight at 80 psi so if you weigh your truck as it normally is then you take 1/2 of the axle weight I.E 3200 / 2 + 1600# then x / 80 then divide 1600 or whatever your # actually is by the result of the first equation for the needed psi for your load.
Theres another way to tell just air up to 80 psi then find a straight paved road & put a chalk line accross each tire then drive slowly in a straight line until the chalk starts to dissapear. If in the center your overinflated if the outside then under & adjust psi until the lines wear away evenly.