Tire Pressure Question

I have Nitto Terra Grapplers LT325/60/R18 on my 4 door 2014 Taco 4X4, what tire pressure should I run currently they are at 34PSI
The reason I ask is because the inner and outter parts of my tire are clean as in not making contact with the road and I didn't know if it had anything to do with the tire pressure.

 

35

 

Unless you have stock tires you cannot rely on the sticker in the door. To find out the correct inflation for your truck you must 'chalk test' the tires.

1. Inflate all tires to 35psi. (Start high. You can always let some air out if needed)
2. Go to a large parking lot where you have at least 300 feet of open pavement.
3. Using ordinary, children's sidewalk chalk, draw a 1" wide line across your tread on one of your front and rear tires.
4. Drive in a straight line for 300 feet.

How's it wearing? Is it worn off in the middle but not on the sides?

If so, you are overinflated. Lower the pressure to 32psi and try it again. Keep repeating the process until it's worn evenly across the entire tread.

Is it worn on the sides but not in the middle? You're underinflated. Add a couple of pounds and try it again. You get the idea...

Our trucks are not very heavy, and they are lighter in the rear than in the front, so your front tires will probably take more than the rears. My truck has Goodyear Duratrac's on it and I found that 30psi in the front and 26psi in the rear is just right. I would be surprised if you need more than 30psi in any of your tires....

 

^^^^ this!!

My truck on 255/85s rides like a tank with pressures over 35psi and the rear end gets limited traction empty with pressures higher than 28 or so. I usually run them at 30 in the front and 25 in the rear (empty). If im going on a long road trip ill bump them up 5lbs to get some slightly better gas mileage.

 

wow my truck came with bfg all terrains at 49psi front and rear. Ill have to try the chalk out