The yellow sticker on the "B" pillar is the tire inflation needed for Max payload. Stop and look at ALL the numbers on your tire! Not only the Max pressure, BUT the weight rating at max pressure! On a dually the weight rating of the tire at max pressure will far exceeds the axle rating!
To those S that blindly run all TV tires at max pressure may be greatly reducing the tires contact patch with the road, leading to wheel spin when starting out and skiding when braking. There is greater chance of sliding during cornering!
Max pressure is just that max to carry the max load rating of the tire, if you are carrying less than the max load you don't need max pressure.
I don't run any of my LT tires at max as they are not near the max load.