Getting ready to tow my 14K fiver door sticker says 65 front and rear duals.Tires say 80 cold ???. Emty I run 40 in duals 60 in front.

 

mine say 80 cold i run about 65 in the fronts and 70 in the backs

 

My door pillar says at max load, use 65 psi front, 60 psi rear.

John

 

Everyone runs different pressures its all based on experience.....and if you have changed tire size the door sticker would be wrong

I tow a heavy trailer and have larger tires on my truck so I use the pressure stated on the tire side wall.....I don't readjust tire pressure for empty and loaded running I keep it the same always and I have good tire wear

I'm a firm believer that the tire manufacture would know more about what tire pressure is best in their tires then the truck builder does

 

The door jamb tells you what PSI to run it for the GVWR or GAWR.

So I have an empty pick up bed, and "Discount Tire" insists putting 80 PSI in my rear tires because thats how the truck was "designed".

You can find load range charts for every tire and it'll tell you the max. weight @ what PSI. What I'm not sure of, is how much above that do you want to be?

Here's one for 265/75/16 LR E's, not sure if it is accurate because I didn't get it on any manufacturer's website.

Recommended Tire Pressure psi

Tire Load Lbs.

% Maximum Tire Load Capacity

Axle Weight

47 2000 58.6% 4000
48 2050 60.0% 4100
49 2100 61.5% 4200
50 2150 63.0% 4300
52 2200 64.4% 4400
53 2250 65.9% 4500
54 2300 67.3% 4600
55 2350 68.8% 4700
56 2400 70.3% 4800
57 2450 71.7% 4900
59 2500 73.2% 5000
60 2550 74.7% 5100
61 2600 76.1% 5200
62 2650 77.6% 5300
63 2700 79.1% 5400
64 2750 80.5% 5500
66 2800 82.0% 5600
67 2850 83.5% 5700
68 2900 84.9% 5800
69 2950 86.4% 5900
70 3000 87.8% 6000
71 3050 89.3% 6100
73 3100 90.8% 6200
74 3150 92.2% 6300
75 3200 93.7% 6400
76 3250 95.2% 6500
77 3300 96.6% 6600
78 3350 98.1% 6700
80 3400 99.6% 6800

 

I run all six at 80psi year round empty or towing. Nice flat, even wear on the Michelin LTX M/S.