2nd Gen Non-Engine/Transmission tire air pressure

[rchall]

What is the standard air pressure for 265/75r/16 ? \no load & \loaded

 

[Joe Mc]

When I had 265's I got the best unloaded ride, wear & mpg with 65 front and 50 rear. Anything over 50 rear unloaded and you'd bounce all over. Increase the rear as the load goes up not to exceed the sidewall psi stamp. MHO.

 

[rfcom]

When empty (which is nearly all the time) I run my 265's 55 front and 45 rear. I wonder if this is too low?



Jim

 

[alaskax]

I run mine at 80 psi front and back whether loaded or not

I don't notice much difference in ride no matter what the pressures are... I guess I'm not too sensitive about bumps! Rolling friction should be minimum at maximum "hardness", so I just crank them up to their maximum rating!



I'm not sure if I am contributing to faster tire wear, but I don't see why high pressures would unless it's uneven wear.

 

[fortunate1]

I'm with alaskax. I run 75 psi in all tires all the time. They have been lasting around 65K-70K miles before buying new tires. Ride is fine, and milage is always between 20-22 mpg in mixed or fast highway driving.

 

[JPLB22]

I run my tires at 76 psi front and 44 psi in the rear. I am unloaded 95% of the time. I run the pressures as high as possible in reference to the dust lines. I figured that if the dust line was right to the edge or dang close anyway that I would be using the entire tread patch and therefore get longer tread life.



But fortunate1 got really good tread life ( at least I think 65k - 70k is good life ) by going much higher in the rears than what I would usually do. So that kind of shoots holes in the dust line theory. And I do raise the pressure in the rears when I do tow heavy. I also rotate every 6000 miles.



Jeff

 

[WadePatton]

Depends on the tire

Not all 265/75/16's are the same.



The OEM load range E Michelins are rated up to 80 PSI.



You can buy Michelin 245/75/16's at (and probably 265's) at the department store that only take 35psi (and are rated for two bales of hay and a sack of feed. ) I know someone who did this recently. I'm going to watch the results closely.



Also Michelin MS's and AS's come in load range E but the AT's don't.



I run between 50-60psi most of the time in my 10-ply rating, "E", 265's. Next time I do a mileage experiment I'll go to 80psi.

 

[HillCountrykid]

When I ran 265's I used 55/45 just like rfcom. That's with an empty weight of 8000 lbs.



Brian

 

[merryman]

Here is a formula I picked up somewhere years ago; it was represented as the correct way to determine the needed pressure, I can not say it IS correct, but it matches pretty closely with the inflation schedule that came with my truck



Actual weight on tire (I just weigh the axel and devide by two)

devide that by the max. rated weight for the tire and multiply that times the max. rated pressure for the time.

In my case;

front axel weighed 4650 on DOT scales, that devided by two gives me 2325, which when devided by the rated capacity for the tire of 3415 gives me . 68. Multiply that be the max. pressure of 80, gives a correct pressure for that load of 54. 46 psi. (I usually fudge up a few pounds and round that one off to 57 #

The schedule that came with my truck gives a weight capacity of 2400 # at 50 psi.



Vaughn

 

[Oil Burner]

55 front 45 rear for me also. unloaded, mostly.

-Jason

 

[rchall]

Thank You for the Help

Thank You for the Help

 

[rchall]

TIRE PRESSURE

I settled on 50psi in the front and 50psi in the back. It ride and drive so much better now and my fuel mileage has gone up by three mile per gal. .



from

Ricky

 

[rfcom]

I just pumped mine up to 60/50 and it seems to steer easier and doesn't pull in the tire grooves when changing lanes. Any difference in mileage is yet to be determined.



Jim