Tire Pressure

[4x4junkie]

My rangR is heavier than most (2500lb front, 3500lb rear), and I found that on 31/1150/15 the rear is good @40psi. The front is still in committee (and out to lunch) but 40 seems too hi yet, next set of tyres Im trying @35psi (except I may go to another size which calls all bets off).

That's a lot of weight... your rear axle is only rated for 2750lbs (or 3200 if you have the 31 spline axle (FX4)).

 

[Ozwynn]

I have 265/75/16 on the 'burban (basically 31.5x11/16) load "d" and I ran them at 50 psi and rotated every 6000 miles, nice even wear all the way around, they got 30,000 miles on them and still 75% tread left on Yokohama Geolanders.

 

[rangerbum]

I got my General Grabber At2s in july. I run them at 49 psi( I check at least 3 times a week) and they are wearing like steel. I keep them rotated and check pressure constantly since I am practically obsessive compulsive and everything must be perfect. Very very even wearing.

 

[Wicked_Sludge]

you guys that are running over 40 PSI on an empty truck are crazy. even if your somehow getting even wear, the reduction in traction is terrible.

some time ago, i ran mine at 50PSI for a week because i was trying to squeeze all the fuel economy out of the truck that i could. i quickly discovered that rock hard tires+light truck+spirited teenage driver=understeer in the worst way. the difference after airing back down to 30PSI was night and day.

 

[Ozwynn]

A Suburban is hardy an empty truck even when its empty.

 

[Wicked_Sludge]

since this is a ranger forum...i was refering to those of us with ford emblems

 

[TwoTrackMind]

That's a lot of weight... your rear axle is only rated for 2750lbs (or 3200 if you have the 31 spline axle (FX4)).

Youre absolutely right- I burnt 3 bearings in two standard axles then put in the Level2 axle about 18 months ago, no probs since. I also have a couple extra leafs on each side w/ airbags

 

[rangerbum]

you guys that are running over 40 PSI on an empty truck are crazy. even if your somehow getting even wear, the reduction in traction is terrible.

some time ago, i ran mine at 50PSI for a week because i was trying to squeeze all the fuel economy out of the truck that i could. i quickly discovered that rock hard tires+light truck+spirited teenage driver=understeer in the worst way. the difference after airing back down to 30PSI was night and day.

My truck almost always has a load. And as far as traction goes when its not loaded, Believe me I know theres none at all. my truck rides like crap without a load because of the shocks Ive got on the rear. Real stiff. Nice'n smooth with 400-500 lbs in the back though.