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Wheel offset

Discussion in 'Wheels & Tires' started by J clem, Jan 2, 2020.

  1. Jan 2, 2020 at 4:16 PM
    #1
    J clem

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    J clem [OP] New Member

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    What “offset” of wheel do I need for my aftermarket wheels. Have a 2010 Jeep Wrangler Unlimited Sahara.

    going from stock tires on R18 to 35x12.50xR18 tire and 2.5 inch lift.
     
    J clem, Jan 2, 2020
    #1
  2. Jan 2, 2020 at 5:05 PM
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    aggrex

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    aggrex Well-Known Member

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    Welcome @J clem ...IMO stick with 17" for better selection of AT or MT tires. Jeepers tend to run 4.5-5.25 back spacing to move the tires just out the flares otherwise 1.5" wheel spacers with OEM wheels should be fine.
     
    aggrex, Jan 2, 2020
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  3. Jan 2, 2020 at 6:19 PM
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    JKBob 25

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    JKBob 25 Well-Known Member

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    Welcome to the forum @J clem. Agree with @aggrex. Tire selection is much great at the 17" size. Also. Going from stock 17" and whatever your stock tire size is, to 18s, will throw your speedometer and tranny shifting off. There are several computer reprogrammers on the market. Personally, I use the Flashcal Superchip.
     
    JKBob 25, Jan 2, 2020
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    Justanotherjeeper, aggrex and Blue Baby Sound like this.
  4. Jan 2, 2020 at 6:20 PM
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    Blue Baby Sound

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    Blue Baby Sound Well-Known Member

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    All the world's indeed a stage And we are merely players Performers and portrayers Each another's audience Outside the gilded cage
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    ^ +1

    For 35s I like to shoot for 4.5" BS, but we don't have any laws about sticking out past the fender.
    Try to stick with backspace measurements as offset will change depending on wheel width.

    If you still have the plastic air dam up front you'll have to trim it some. No biggie.

    Good luck!!
     
    Blue Baby Sound, Jan 2, 2020
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  5. Jan 2, 2020 at 6:38 PM
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    J clem

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    J clem [OP] New Member

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    My stock wheels are 18”
    I’m staying with R18 but,
    going with 35x12.50 tires and 2.5” lift. I’m trying to order new 18” aftermarket wheels to support the 35” tires. I can choose offset, +1mm, -12mm, +19mm, -13mm, etc...

    I don’t know how to determine which ones I need.
     
    J clem, Jan 2, 2020
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  6. Jan 2, 2020 at 7:51 PM
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    JKBob 25

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    JKBob 25 Well-Known Member

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    Gotcha. Your Sahara did come stock with an 18in wheel. The R, stands for radial. Has nothing to do with tire size. . But stock tires are p255. Which is approx a 28 in tire. Your looking to jump to 35s. Again....There's several other issues your going to have to address.
    The offset sizes your listing....1mm, 2mm. Etc. Me personally. I'm not fimilar with those offsets.
    Hopefully some one will jump on that did the research for you.
     
    JKBob 25, Jan 2, 2020
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  7. Jan 2, 2020 at 8:01 PM
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    aggrex

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    aggrex Well-Known Member

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    If OFFSET is what you insist......try this link: and this is the best time to make the decision on wheel size 17 vs 18
     
    aggrex, Jan 2, 2020
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    JKBob 25 likes this.
  8. Jan 3, 2020 at 4:57 AM
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    Blue Baby Sound

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    Blue Baby Sound Well-Known Member

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    Like I mentioned previously, offset will vary depending on wheel width. So you'll have to tell us the wheel width for us to answer the question.
     
    Blue Baby Sound, Jan 3, 2020
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    aggrex likes this.
  9. Aug 13, 2021 at 4:50 AM
    #9
    robertcladner55

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    robertcladner55 New Member

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    I use this tire size calculator - (https://tonybassogm.com/wheels-tires/tire-size-calculator/) because it is exactly intended to measure the tires of the jeep. Here I have found tire size specs and suggested tire sizes for my Wrangler!
     
    robertcladner55, Aug 13, 2021
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  10. Aug 14, 2021 at 9:24 AM
    #10
    Justanotherjeeper

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    Justanotherjeeper Well-Known Member

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    paid cash for it.
    I use a -12mm offset with a 4.5” backspace with 17x9 rugged ridge XHD wheels. The tires are 285/70/17.
     
    Last edited: Aug 14, 2021
    Justanotherjeeper, Aug 14, 2021
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    aggrex likes this.
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