prairiesailor

Hi all,

Got new Light Truck tires that show max load at 80 psi. I'm unsure if this means you run them at 80 psi? Or would you run them lower unless hauling or towing?

Apples

Are they a similar size to what was on the truck from the factory? If so, then run them at the cold inflation pressure printed on your driver door jamb.

prairiesailor

Same size, just much higher load rating.

RLXXI

Run them at a lower pressure, max load is what that pressure rating on the tire sidewall is for. You probably have load range E like I do. I run 40 psi for everyday use.
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marshallr

The WHEELS on 1/2 ton trucks aren't even rated for 80 PSI. They will eventually fail with that much air pressure in them. Generally speaking when moving up to LT tires from P series tires the same air pressure used in the P series tires is pretty close to where you want to be. You may want to experiment and may find that slightly less pressure will work just as good and ride better. I run 35-40 PSI for normal driving and about 45 PSI if towing or hauling heavy weight. Which is the same pressures I use with P series tires.

13XLTEco

I have 40 in my Cooper AT3 p rated.. Dam thangs are less noisy that way.

Rick McDaniel

This.

RLXXI

Where did you hear that? Post your source for this information.
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dont slow down

With today’s tires and the high mileage warranties that many manufacturers offer I have another question. Do you run the pressure that is in the door jamb? Or the pressure that the manufacturer recommends? I’m sure to get 60,000 miles out of a tire they were testing it with a specific pressure. Which one should be used?

juanvaldez

Where did you find a factory recommended tire pressure?