This didn't really fit the tire and wheel sizing thread, so I'm posting here.

I recently put LT tires on my truck. It came with P-metrics, and the door placard specifies the P-metric with 35psi recommended pressure. I like the thicker tread and 10 ply sidewalls that these E load rated tires give, and don't mind the hum from the aggressive M+S tread pattern or the stiffer ride. These babies have no problem getting through a muddy corn field when I go goose hunting, and are great in the snow.

What I am wondering though, is if anybody knows of a chart or table that would show how that 35 PSI on the door placard for the Passenger tires relates to a recommended pressure for the Light Truck tires. I know it should be higher, but not what is optimal.

 

Use the tire sidewall. Them mark a chalk line across the tire. Drive 5 miles look at the chalk line. All gone all the way across is good. Edges gone under inflated. Center gone over. Door placard only applies to factory tires.

 

I'm more looking for a load/chart that will give the right psi on the LT's to match the load tasting of the P's at 35psi

 

There isn't one. That's what to chalk line is about.