GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 8 of 8
  1. #1

    Default What Wheels??????

    Ok I have seen the threads for offset and back spacing but for some rewason I just cannot understand how this stuff works!!!
    Can someone tell me what kind of offset i need on aftermarket wheels to run 33 12.50 18 on a 2010 silverado z71 with a 2 1/2" leveling kit?
    Please help and thanks in advance!

  2. #2
    Legend
    stephan's Avatar
    Join Date
    Sep 2010
    Location
    Far West, Oregon USA,
    Posts
    8,610
    Blog Entries
    1

    Default

    If you can't get a reply from someone who has actually done this on a vehicle exactly like yours, then make a mock up of a tire from cardboard, (including the profile/cross section/aspect ratio) & try it. I had to do this on my '88 cuz nobody has old junker '88 body frame like I drive anymore ha ha.. I found out exact backspacing I needed but I already had the wheels given to me that I wanted to use so.....
    I found out that mine would rub on the inside rear of the tire on the frame on tight turns. I knew this would cut my turning radius down a little but am willing to live with it. 33's & 35s' cleared mine everywhere else, they just rubbed on the frame, but yours is going to be a lot different.
    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

    Just run a zero offset and you'll be fine.
    2000 Silverado 5.3L Z71 4x4: K&N air filter, Procomp 16x8 rims, 285/70R16 Toyo AT2s, Kenwood head unit, Alpine 500.1 amp, 12" kicker, Infinity 5.25" speakers, Bilstein HD shocks, EBC GD Sport dimple & slotted front rotors w. EBC green stuff pads, Brembo slotted rear rotors & HIDs.

  4. #4
    Legend
    stephan's Avatar
    Join Date
    Sep 2010
    Location
    Far West, Oregon USA,
    Posts
    8,610
    Blog Entries
    1

    Default

    Quote Originally Posted by ridick_bowen View Post
    Just run a zero offset and you'll be fine.
    What?
    Zero offset just means the mounting point/center is in the middle of the wheel (f to b) & his backspacing will be 1/2 of his wheel width. How is that going to work for what he's trying to figure out?

  5. #5

    Default

    Ok it kind of depends on which wheel you select because all wheels are made differently. The best idea is to order through a place like 4Wheelparts who can order the wheels and tires specifically for your setup. For yours I would recommend about a -12 to -25 offset and a 4.5 to 5.5 back spacing. Check out this website as well. Its where I got my information. http://www.rimsntires.com/packages.j...iceMax=1000000

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

  6. #6

    Default

    Quote Originally Posted by klgj0102 View Post
    Ok I have seen the threads for offset and back spacing but for some rewason I just cannot understand how this stuff works!!!
    Can someone tell me what kind of offset i need on aftermarket wheels to run 33 12.50 18 on a 2010 silverado z71 with a 2 1/2" leveling kit?
    Please help and thanks in advance!

    We would need to know the Width of the Aftermarket 18in"Rims??....To really be able to help with Advice......without it were guessing??

    The Chevy Factory Alloy 18/8 Rims have a......+31 Offset and a 5.75 Backspace.


    With the tire size you have mentioned......its going to be a Tight Fit.. with the 2-1/2 leveling kit you have.
    Measuring Wheel Offset

    To Calculate Offset you'll need the following measurements:
    .....Wheel Backspace
    .....Wheel Width Wheel Center line
    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


    Using the Chart Below if you know the Width of your Rim and the Backspace follow the 2 and then you will know your Offset.



    The below link will help.......by entering the Tire size & Rim size you have now and the one you are looking at installing.......it will show you......Backspace/Offset....it will also tell you the Difference in the 2 Tire and rim setups and if you have room for the new setup to fit.

    Link....Tire Fitment,
    http://www.rimsntires.com/rt_specs.jsp


    ---------- Post added at 04:29 PM ---------- Previous post was at 04:27 PM ----------

    Quote Originally Posted by ntbush83 View Post
    Ok it kind of depends on which wheel you select because all wheels are made differently. The best idea is to order through a place like 4Wheelparts who can order the wheels and tires specifically for your setup. For yours I would recommend about a -12 to -25 offset and a 4.5 to 5.5 back spacing. Check out this website as well. Its where I got my information. http://www.rimsntires.com/packages.j...iceMax=1000000

    Sorry ntbush....while I was trying up my reply.....you posted up.....Didn't mean to do that....

    MIKE


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










  7. #7

    Default

    Hahah its all good! I love that chart man. Thats the key right there!

  8. #8

    Default

    The aftermarket wheels are 8.5 and 9" wide.
    Will these tires clear on factory wheels?

Similar Threads

  1. New wheels!
    By chrismx104 in forum Lifted & Offroad Suspension
    Replies: 3
    Last: 03-20-2010, 01:46 PM
  2. wheels
    By silverado454 in forum Lifted & Offroad Suspension
    Replies: 2
    Last: 03-18-2010, 12:22 AM
  3. wheels
    By kline017 in forum Lifted & Offroad Suspension
    Replies: 1
    Last: 03-13-2010, 11:16 AM
  4. Wheels
    By Jarrad in forum Lifted & Offroad Suspension
    Replies: 4
    Last: 06-28-2009, 11:18 PM
  5. TRADE chevy 20" chrome wheels for other chevy 20" wheels
    By 07RedVrtecMAX in forum General Classifieds
    Replies: 2
    Last: 01-28-2009, 07:47 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •