Just bought a used Expedition (98) and the manual says to check the passenger door panel for the psi decal. It's not there!!! My tires are 285/70R17. Anyone know the psi or where else I can find it?

 

What kind of tire are they P series or LT? If LT, what load range C, D, or E and what max pressure on the tire? Makes a difference.

 

You don't have to check the tire pressure on the passenger door panel, especially since the truck is that old...I'm sure those aren't the original tires and could recommend a different pressure.

One the sidewall of the tire, really close to the rim, you will find where the tire will give you the max. air pressure. My truck's max is like 50lbs cold...I run 42lbs. I know my tires so I just keep an eye on the belly in the sidewall and air them up to whatever ride I want or to whatever kind of weight I'm towing. More weight, more air, but the weight will help your ride.

Probably more than what you wanted to hear, but I hope this helps.

Good luck..._motes

 

I've found 40 psi to be a good starting point.

 

That would be fine if LT load range C tires, but if they are P series tires, that would be 5 psi over max. And many of the tires they use on the expedition are P series. However without knowing there is no way to suggest a pressure.

 

I have about 36-37 on average in my 265's, goodyear at/s LT's load range C tires, and that seems to be nice, 40 wore the centers faster than I thaught. Don't go by the tire, because it will say max, at least I never do.