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Understanding Off sets

Discussion in 'Wheels & Tires' started by badguybuster, Aug 31, 2010.

  1. badguybuster

    badguybuster [OP] Well-Known Member

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    So, I was pondering off sets: positive, zero, and negative. I never really gave it much thought until I decided to put 35's on my Tundra. I got to looking around and found this info. Based on what I am reading here, having a large negative offset, lets say -18, is about the same as putting wheel spacers on your truck? Is that right? Since it puts extra stress on the hub and suspension.


    http://www.discounttire.com/dtcs/infoWheelOffsets.dos
     
  2. KPT

    KPT sees what you did there.

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    It really depends on the width of the rim as to how much the wheels stick out, but yes, the more negative the offset, the further out the wheel mounts from the center-point of the rim.
     
  3. KPT

    KPT sees what you did there.

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    Here's a site that explains some more.

    As you can see from the chart about 1/3rd of the way down, the backspacing of the wheel depends on both the offset and the width.

    https://www.rsracing.com/tech-wheel.html

    What you'll want to do is find out what the ideal backspacing is for a trundra to run 35's. Then when you find rims you like, you'll be able to use their wdith to determine what offset gets you to that ideal backspacing number.
     
  4. badguybuster

    badguybuster [OP] Well-Known Member

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    yeah, I saw that one too. Still doesnt answer the question tho. Does large negative off set cause the same issues are running spacers?
     
  5. KPT

    KPT sees what you did there.

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    I can't think of a reason it wouldn't cause the same wear issues.

    As you know, a spacer is basically just adding thickness to the rim seat, giving it an more negative apparent offset. So I don't see a difference between the two as far as stress goes.
     
  6. badguybuster

    badguybuster [OP] Well-Known Member

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    Thats kinda what I figured. The rest of the tires should be here this week, then the testing starts. I really like my wheels, so if they dont fit I am gonna be really bummed out.
     
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