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  1. #11


    For you guys running 60+PSI, you are pounding the snot out of your truck, and your back. And your tires are not going to last as long. The numbers in the door are for when the axle is at max capacity. I run 35-40 up front, 30-35 in back. Been doing this for years. Truck rides MUCH better, tires wear nice and even.
    When you hear hoofbeats, look for horses not zebras.

  2. #12


    I just looked on the door of my 2500 HD and it says 60 psi front/80psi rear

    My on board computer says they are 72 front and 75 rear but they do gain psi when hot

    Anyone know how to reset the computer to drop the psi and not get the low tire pressure light to come on?
    :great:Semper FI

    2008 Vortec 6.0 LT Z-71
    2500 HD "BIG BOY" Truck
    Stealth Grey Metallic
    Volant Cold Air Intake
    Line X Bed liner
    265 75 R16 Michelin LTX M/S2 ORWl
    Chrome step bars
    Fog lights
    3M clear shield hood protector
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    Truxedo Low Pro QT Tonneau Cover

  3. #13


    it tells you in your owners manual but it varies per manufacture yours proalby is turn the ignition on not running then turn your lights on and off 3 or 4 times in a row horn will honk then go and let out air till it honks again starting at the left front tire then right front right rear and last the left rear then it should be ok just reair up the tires to proper pressure

  4. #14


    I have the Magnaflow too and love it, my brother got his used from craigslist but I wanted a valid warranty so I got it here. Magnaflow Exhaust 166702, or you can try one of the sponsors here on the forum, they are allways having sales/specials. Either way its a great exhaust system, sounds great, and very easy to install.

  5. #15
    Jr. Engineer moosetags's Avatar
    Join Date
    Jan 2008
    Santa Rosa Beach, Florida, in the Florida Panhandle, so far out that we are in the Central Time Zone

    Default Greetings from the Florida Panhandle

    Quote Originally Posted by vncj96 View Post
    Those obviously arent the factory tires, find what the manufacturer says
    Suburban 2500's come from the factory with LT245/75R16 Load Range E tires. The factory recommended tire pressures as found in the driver door jamb are: Rear - 80 psi and Front - 50 psi.
    Brian McCabe
    Santa Rosa Beach, Florida
    '05 Yukon XL 2500 Quadrasteer
    '11 Silverado 3500

  6. #16


    It is quite adviceable to follow factory recommendations.

  7. #17


    Quote Originally Posted by tbplus10 View Post
    One of the easiest ways to find where you should be running your tires is to draw heavy chalk lines across the pavement in front of the tires then roll the truck over the chalk lines and check the findings.
    Chalk line on outer edges and not the center to low pressure.
    Chalk lines across the center and not the edges to high pressure.
    Chalk line evenly across the tire pressure is right.

    In this case since your wanting loaded and unloaded pressures you'll need to load the truck and find the pressures, then do the same method unloaded.
    Record your pressures for future use.
    When using this method you'll notice all four tires will probably end up with different pressures, this is because the load at each tire is different.
    i never thought about that... nice tip although if you go to discount tire theyll do it for ya
    2008 NBS Silverado Z85

    4.8 V8
    -8000k HIDS
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    -Blacked out headlights (courtesy of JAKD-UP)
    -285/70/17 BF Goodrich All Terrains (minimal rubbing still) :grrrrrr:
    -Blacked out grille and both bumpers
    -Smoked taillights
    -Blue interior dome lights

    "A work in progress is something every man should have"

  8. #18
    Jr. Engineer
    Join Date
    Aug 2009
    Muddy Creek, Va & Hunting Quarters NC


    Maybe you can contact Laramie??

  9. #19


    Quote Originally Posted by gabe74gt View Post
    It is quite adviceable to follow factory recommendations.
    Only if you are operating the truck with each axle loaded to the GAWR. If you have both axles at GAWR, you will greatly exceed GVWR.

  10. #20


    so maybe we should run at 45 then 70 then 45 then 70 each time we hook up and un hook????

    Doesn't sound very efficient to me, thought taht was why they posted the sticker on the door, they don't have 2 different numbers!!!!

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