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  1. #1

    Default Wheel Backspacing?

    I've always been a bit confused on the back spacing and offset on wheels. I'm looking at getting some 20x10 wheels and not sure what offset the wheels should be. I'm planning on putting on a 325/60/20 tire if that makes a difference. Anyone know much about this?
    Last edited by ntbush83; 10-07-2010 at 03:23 PM.

    2006 Duramax LBZ
    Edge Evo
    4'' Diamond eye to 6'' tip
    16'' ion alloy, 33'' fierce attitudes
    Lots of work left to do!

  2. #2
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    stephan's Avatar
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    Default

    I found this in the archives a few days ago. It should answer all your ques on wheels. It's excellent
    http://www.gmtruckclub.com/forum/sho...r-Measurements
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  3. #3

    Default

    Thanks that did answer all my questions! That was a freakin sweet diagram

    2006 Duramax LBZ
    Edge Evo
    4'' Diamond eye to 6'' tip
    16'' ion alloy, 33'' fierce attitudes
    Lots of work left to do!

  4. #4

    Default

    Quote Originally Posted by ntbush83 View Post
    I've always been a bit confused on the back spacing and offset on wheels. I'm looking at getting some 20x10 wheels and not sure what offset the wheels should be. I'm planning on putting on a 325/60/20 tire if that makes a difference. Anyone know much about this?
    Backspace and Offset are tied together
    Measuring Wheel Offset To calculate offset you'll need the following measurements:
    .......Wheel backspace Wheel Width Wheel Center line (outboard flange to inboard flange measurement.

    ......Wheel center line from Wheel backspace to get offset......If backspace is less than the wheel center-line the offset is negative....If backspace is greater than the wheel center-line the offset is positive.








    On the Below Link.....On the Left Side,you want to enter your Rim and Tire Size you have on your truck Now......and then on the Right Side enter your Rim and Tire Size,
    It will show you the difference from your Stock Rim & Tire Set-up,to the Rim & tire set-up you want to put on,

    http://www.rimsntires.com/rt_specs.jsp

    Edit....Sorry Stephan,While I Was writing-up my reply....you had replied,did not mean to do that.....





    Last edited by 99'HEARTBEAT; 10-07-2010 at 04:04 PM.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  5. #5
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    stephan's Avatar
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    Quote Originally Posted by ntbush83 View Post
    Thanks that did answer all my questions! That was a freakin sweet diagram
    I saw that same article in a Super Chevy mag about 6 years ago, but loaned it to my friend & never got it back so was happy to find it here at GMTC.

    ---------- Post added at 02:23 PM ---------- Previous post was at 02:16 PM ----------



    No Worries Heartbeat
    I am such a slow typer that many times there are 2 or 3 posts appear while I am typing my answer.




    [/FONT][/QUOTE]
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


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