stepside

[RyanbabZ71]

Just curious what you are running your 285's at.

 

For about 2 wks now the front end has been sloppy.  I was running 50 all around.  I added 2psi up front and am running 52 as of today boy what a change.  Ride and handling got much better

[Stepside Z]

I have been running 35psi. I will add 52/50 to see if I notice a difference.

[RyanbabZ71]

35 psi?

 

Holy crap.

 

Arent your tires bowing out any at the bottom?

 

I like the harder ride with the extra air

[y2kz71]

I run 53 front and 45 rear. The rear is lower to give the truck less of a harsh ride.

[DigUout]

I'm running 50PSI all around for everyday driving.  More when towing -

[Zane]

52psi?? I've never heard of any truck running that high!

I do the normal 35psi, and everything seems fine to me.

Do you guys think that running that higher pressure is 1. safe, 2. effecting the center tred wear, 3 giving you better MPG?

[RyanbabZ71]

mervz these are 285 size tires.  The max PSI is 65.  I am running 52 up front which is 80% of the max and 50 psi in the rear which is 77%.

 

Tread is wearing normal much better than the 35psi i ran in my fstone (middle tread bald and no the pressure wasnt to high)

 

To answer your questions

 

1. safe?  Well i have 11K on them with no problems.  At first the first 1-2K i ran 54-55 psi in em.

 

2. effecting the center tred wear? Nope no tread wearing problems at all

 

3 giving you better MPG? Dont know dont care

[Zane]

Quote from RyanbabZ71, posted on Sep. 23 2001,1:49

mervz these are 285 size tires.  The max PSI is 65.  I am running 52 up front which is 80% of the max and 50 psi in the rear which is 77%.

 

Tread is wearing normal much better than the 35psi i ran in my fstone (middle tread bald and no the pressure wasnt to high)

 

To answer your questions

 

1. safe?  Well i have 11K on them with no problems.  At first the first 1-2K i ran 54-55 psi in em.

 

2. effecting the center tred wear? Nope no tread wearing problems at all

 

3 giving you better MPG? Dont know dont care

 

 

 

 

 

Hmm, interesting! Well, i learn more everyday!

Thanks for the info(off to check my tires and see what they are rated for!) hehehe

[Kansas Kid]

Have any of you guys run your trucks across a scale and used this to figure out the actual air pressure you should be running?  You need to get both the front and rear axle weights.  Just curious....

 

The tires I have on my truck are rated at 80psi max, and I dont' even run 50psi in them.  I run at 45psi in the front and 40 psi in the rear.  Of course I will air them up when I get a load in the back.  btw, these tires don't even bow out under the weight of my truck when they have about 30psi in them.  LOL

[CR500]

Excellent question and nobody has the same answer and the tire manufacturers are all gun shy now.  I remember a great article in a 4 wheel magazine.  Get a piece of chalk, and draw a line across all your tires.  Drive back and forth in a straight line and look at the wear.  If it is wear on the sides, add pressure. In the center, take some out.  I think it is the only way to tell.  Running over 50 p.s.i. in an unladen truck is probably way too much.  If you go off roading, that's different.  At least you guys bought BFG's.  Those crappy Badyears have left me stranded in the Mojave desert.  Good if you don't off road, maybe for the baby sitter's civic.

[Stepside Z]

Well I added 52 front and 50 rear. The ride is a little harsh. I think I am going to drop down to 50 front and 45 rear. I don't have an ext cab so I am going to try some different pressures until I find what I like. I like the chalk idea and I am going to give it a try.