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2500 tire pressure

CMNTMXR81

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Shaners Senior Enthusiast

Shaners

Posted
Posted

Pouly,

 

My truck is empty most of the time or has less than 500 lbs in it and I'm running 55 psi all around.  Since I'm unloaded I don't want too much air in the rears so the tire doesn't crown and wear the center out...

raventai Enthusiast

raventai

Posted
Posted

mine had 40 all the way arround stock and the fronts looked almost flat (dealer trick for better ride?) so I pumped the fronts to 56 and left the backs at 40 and they look square will know more when i start to see some wear

raventai Enthusiast

raventai

Posted
Posted

Quote from CMNTMXR81, posted on Nov. 01 2001,11:43

If they are the Firestone's, I believe the ratings are 80psi cold!

 

yes mine are firestones and say 80psi on the side but this is max for when the truck is loaded to the max, for emty travel I would think they would wear the middle out this would also reduce your traction

CMNTMXR81 Senior Enthusiast

CMNTMXR81

Posted
  • Author
Posted

Quote from raventai, posted on Nov. 01 2001,9:30

Quote from CMNTMXR81, posted on Nov. 01 2001,11:43
If they are the Firestone's, I believe the ratings are 80psi cold!

 

yes mine are firestones and say 80psi on the side but this is max for when the truck is loaded to the max, for emty travel I would think they would wear the middle out this would also reduce your traction

 

Agreed, I set mine to 50psi this weekend when I changed the oil.

  • 5 months later...
BDBWTE Senior Enthusiast

BDBWTE

Posted
Posted

The tires that came equiped with the truck should be inflated to 80psi on a 2500HD pickup-truck.  The truck comes equipped with a 10 ply heavy duty tire.

gandolphxx Senior Enthusiast

gandolphxx

Posted
Posted

Welcome to the board :thumbs:

 

Now lets talk about tires, There is no way that you would want to inflate to 80psi cold on a 2500HD - that is way too much, your tires will look like a bagel and wear worse - 50 psi is plenty for the weight unless you are hauling a car trailer. :D

Dihappy Enthusiast

Dihappy

Posted
Posted
look on the inside of drivers door. It will tell you what to run your tires at. I run 55 in the front and 80 in the rear.

Oh My!

You do mean 55 in the REAR right?

 

Do a chalk test or make a graph, id sure hate to drive a truck with high pressures everyday.  Geez!

 

 

FYI- 33 front 23 rear :thumbs:

SWLA Enthusiast

SWLA

Posted
Posted

I recently increased mine from about 40# in all tires to 60# in the front and 50# in the rear.  Did it mainly to see if it would have any effect on my MPG on a long trip.  Could get 18.5 before at 75-80 unloaded, trying to break 20 MPG as some here have reported (only way I see it happening is if I drive 65).  No real improvement in fuel economy, but a much harsher ride.  I seldom tow anything, and when I do its usually about 1000 lbs max.  I think I will let some air out as the only difference is a noticably rougher ride.  Added bonus of running lower pressures may be wearing the crappy stock firestone tires out a little faster so I can replace with something better.  Take this with a grain of salt as I can't confirm it, but I read on another forum that GM released a TSB that told dealers to  replace the sticker inside the door with one recommending lower tire pressures if you take your truck in for service.

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