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  1. #1

    Default Tire Pressure Question

    So i have a set of BFG ATs on my suburban, it should be listed in my thing below and ive been using 40psi on them for the 2yrs i have owned them i am noticing that the outsides of all the tires are being warn while the inner parts of the tires are looking new still. The maximum recommended pressure on the tire is 65psi, i just went down and put about 50psi in each tire. What should the tire pressure be? Is 50psi okay or should i go ahead and bump it up more?
    K1500 5.7L Chevy Suburban
    290000+ miles
    K&N CAI
    Black Bear Performance Tune
    TCI Servo and Shift Kit
    Long Tube Ceramic Pacesetter Headers
    Custom Side Swept Dual Exhaust
    Dual 2.5in electric DMH Performance Exhaust Cutouts
    BFG A/T 285s

  2. #2

    Default

    it should be set at what ever the manufacturer recommends witch i believe is 35psi, edge wear can be caused by alignment issues or lack of rotation or under inflation

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  3. #3

    Default

    35-40psi is pretty standard like z71_guy said, and i agree with him that it sounds like an alignment problem! You can inflate more air but it will effect the ride quality.
    The diference between stupidity and genius is that genius has limits.

    2007 NBS Silverado
    LT2 Z71
    2.5" Levelling Kit
    Hood Stripes
    Chrome Grill
    GM Bed Liner & Tonno
    Dick Cepek Rims 18X9
    Hankook RF10 Tires 275/65/18
    De-Badged Tailgate

    More Mods Coming

  4. #4

    Default

    yeah the door jam sticker is what you should be running even tho the tire is rated to handle more its never a good idea to over inflate or read what the side wall says thats the max pressure before it blows open and seriously hurts or kills/maims some one and just outer/inner edge wear is exaclty what Z71 guy sayed

  5. #5

    Default

    I wonder if I have another steering problem elsewhere, as when I am driving on the highway it is sometimes impossible for the steering wheel to be straight, in order for me to go straight the steering wheel is usually held at an angle. The alignment on the suburban is brand new. I replaced the steering gearbox last year as I thought that was my steering problem as it fixed some of it but the steering wheel has to be angled to go straight most of the time. The door recommends 45psi and I have 49psi in them and the max rated psi is 65psi, i dont care if it rides rough. I really want the tread to level out as my inner treads still look brand new. any ideas what could be causing this wear if it is not the tire pressure?
    K1500 5.7L Chevy Suburban
    290000+ miles
    K&N CAI
    Black Bear Performance Tune
    TCI Servo and Shift Kit
    Long Tube Ceramic Pacesetter Headers
    Custom Side Swept Dual Exhaust
    Dual 2.5in electric DMH Performance Exhaust Cutouts
    BFG A/T 285s

  6. #6

    Default

    If your steering wheel is not straight there is a problem. I can be as simple as, it wasn't positioned correctly when they did the alignment, or can be a sign of a alignment issue, or damage. Was the wheel always off, or is it a recent thing?
    The diference between stupidity and genius is that genius has limits.

    2007 NBS Silverado
    LT2 Z71
    2.5" Levelling Kit
    Hood Stripes
    Chrome Grill
    GM Bed Liner & Tonno
    Dick Cepek Rims 18X9
    Hankook RF10 Tires 275/65/18
    De-Badged Tailgate

    More Mods Coming

  7. #7

    Default

    It has always been off from what i can remember. If it is windy it easily moves the wheels, and you can't feel the steering wheel moving when the wheels move from the wind blowing them. The dealership did the alignment by the way.
    K1500 5.7L Chevy Suburban
    290000+ miles
    K&N CAI
    Black Bear Performance Tune
    TCI Servo and Shift Kit
    Long Tube Ceramic Pacesetter Headers
    Custom Side Swept Dual Exhaust
    Dual 2.5in electric DMH Performance Exhaust Cutouts
    BFG A/T 285s

  8. #8

    Default

    remember road crown it can make the wheel off center, but i would take it back and have them check it just to be sure

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  9. #9
    Master Mechanic Darknesss23's Avatar
    Join Date
    Jun 2008
    Location
    Brookfield, Ct.
    Posts
    536

    Default

    if its not an OEM tire go with the tire pressure on the tire. If the outer tread is wearing faster its under inflated... if its the inner tread its over inflated...

    2008 Chevrolet Silverado 1500 LTZ 5.3L EC/Std Bed 4x4 Flexfuel
    Full Metal Jacket Spray on Bed Liner
    Black Powder coat Diamond Plate Weatherguard Tool Box
    Corsa Performance Sport Exhaust System
    K&N Flat Panel OEM replacement Air Filter
    Bridgestone Dueler A/T Revo tires P275/55/R20
    Black Reflective pinstripe and VORTEC hood lettering
    Billet front bowtie
    Rear Bowtie Delete
    Blue strobe grille lights
    Blue strobe rear window lights
    Blue LED Mini Light bar in front Grille

  10. #10
    Sr. Engineer tigersdl65's Avatar
    Join Date
    May 2009
    Location
    Tallassee, Alabama
    Posts
    384

    Default

    Quote Originally Posted by willbradfan View Post
    So i have a set of BFG ATs on my suburban, it should be listed in my thing below and ive been using 40psi on them for the 2yrs i have owned them i am noticing that the outsides of all the tires are being warn while the inner parts of the tires are looking new still. The maximum recommended pressure on the tire is 65psi, i just went down and put about 50psi in each tire. What should the tire pressure be? Is 50psi okay or should i go ahead and bump it up more?
    I have the same tires, I mean same size and all, and have had them about the same time and run them at 63psi and have had no irregular wear at all.
    Schrub!:sign0011:

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