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  1. #1

    Default Tire Size question

    Hey there

    I recently purchased my first truck. A 2004 GMC Sierra Crew Cab, Z71. I belive the tires on it now are 265/60r/17...or somewheres close to that

    I was just wondering what the biggest size tire I could put on this truck without any mods, and without any problems, except for the expected speedo issue.

    Thanks for your help!

  2. #2
    Davandy's Avatar
    Join Date
    Jun 2005
    Haasdonk Belgium


    First welcome to the site

    You can check this site they have a tire size calulator
    Peter Smet
    Haasdonk, Belgium

  3. #3
    finalday7's Avatar
    Join Date
    Oct 2007
    Sayward, B.C Canada


    You could probly get some 285/70/17's on there with minor trimming or a couple turns on torsion bars.

    2007 GMC Sierra CrewCab 4.8L
    Tinted Windows, 20" Chrome MB Predators on 275/55/20 Copper AT's, GM Bed Rug, Speed Scene Chrome Grille, Putco Chrome Handles, Hypertech Max Energy Programmer, Magnaflow Muffler and many more mods to come.
    Former GM Vehicles:
    96 Chevy Camaro. My first car modded for a High School kid.

  4. #4


    I have 285/75'/16's on my 00 Seirra I think the 285/70's are pretty much the same size diameter wise and I have no lift mods at present.

  5. #5


    Quote Originally Posted by GoFastPadre View Post
    I have 285/75'/16's on my 00 Seirra I think the 285/70's are pretty much the same size diameter wise and I have no lift mods at present.
    You're forgetting that you've got 16-wheels and the 2004 has 17-inchers.
    Are we having fun, yet?

  6. #6


    Here's what Discount Tire ( says about optional tires/wheels for your truck:
    Attached Thumbnails Attached Thumbnails size.jpg  
    Are we having fun, yet?

  7. #7


    i have an 06 sierra with 285/70/17's with a 3 inch lift and they still have minor rubbing in reverse at full turn, nothing serious, the gmc bumper is fatter than a chevy so with gmc's it will rub if its stock, i think the chevy's can pull it off with no lift but not the gmc

    2006 gmc sierra, 4.8l, gibson headers, flowmasters exhaust, hypertech power programmer,4.10 gears, 3 inch rough country suspension lift w/ 285/70/17 cooper disoverer stt's, tinted windows, westin grill gaurd, herculiner bedliner, black fender flares, HID headlights,black painted front bumper

  8. #8


    goin with final day and sayin you should be able to fit a 285/70/17 no problem
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust

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