What is a good tire pressure for the best fuel economy? Would it be ok to use a higher psi than what is recommended by land rover?

 

The higher the tire PSI the better the MPG, to a point, you can put in so much air that you increase tire wear.
I run 40psi all the way around during the summer and 35psi in the winter.
The higher the psi the cooler the tire will run too which will increase tire life.
BUT do NOT exceed the tires max psi., so read the side wall carefully.

 

I go along with the 40 pounds on all 4 corners, best for overall wear and MPG.

 

I'll try 40 all the way around. Max pressure for my tires is 44psi...

 

What brand and tire size are you running, are you running 6 ply, "C" rated tires? Should be 8 ply,"D" rated tires that usually have an apx. max rating near 60 pounds.

 

As always, correct tire pressure is entirely dependent on your tire size, make, model, tire load rating, and weight of vehicle.
Asking on the internet what's right is a complete waste of time unless someone has the exact same tires and weight of vehicle.

You can figure it out yourself using the tread pattern method, or tread temperature method, or calling the tire mfg with your front axle weight and rear axle weight.

If you have a completely stock vehicle and OEM tires, then set them to what the door tag says. Running over inflated will increase fuel MPG but reduce tire life.

 

The tires are Dayton Timberline 235's. Same size as the stock ones.

 

I like to keep the tire pressure about 4-5 clicks lower than the max pressure. Therefore it's got some room to work with

 

The maximum pressure is the pressure to use at maximum load.

 

Not only that, but I am surprised no one mentioned the safety factor yet.... Over/under inflation also reduces traction.

I am all stick running toyo at's and I am running them at 36psi.