Offroading pressures I've covered - but it's back on the road that I get a bit confused:

The recommended pressure (on a sticker inside the door frame) for on road usage is 29 psi, that's for a 4runner with a kerb weight of 1900kg and a GVW of 2510kg. But this seems a bit sluggish so I currently run them at 31psi - I've run them at 35psi in the past and they seemed on the mark then but for some reason I've come down again.

Now my question is this: for a semi loaded 4runner, running on 31" Pirelli ATs, what would be the best pressure to run at? Conditions are dry to light rain.
Can anyone help?

 

Just as a reference, I run my 31" LTX's at 35 psi all the way around on the road

 

I run Pirelli's, and I feel the best pressure for road driving is 33 - 35 PSI.

 

Great! I'll go back to 35psi, I obviously just needed to be reassured that's all!

Many thanks for your advice.

 

Disregard what the door jamb says, read the sides of the tires. They should say what the maximum pressure is.

I run 40 psi for pavement to reduce friction. Fully loaded with motorcycle, tools, camping gear, large passenger, etc. and highway driving barely get the tires warm to the touch. Its my way of making my very expensive tires last as long as possible. The ride is a bit rough but my ass isn't made of eggshells so I don't mind.

Hard tires use less fuel also.

 

Yea, I will go with 35psi street, and I run about 18psi off road.. (I find lower than that I get less performance vs height I lose..

 

Which in turn probably equates to better performance numbers. I am going to do some 30-70 runs. I will keep you all posted.

Right now I am at 30PSI.

 

I run 38 PSI front and 40 PSI rear. Anymore up front and the wind blows me around and I feel the truck move on every road inperfection. As for the rear - at 40 PSI I noticed a marked improvement in acceleration and gas mileage. 38 Rode a little better but it made the truck sluggish.