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Technical Offset & backspace help

Discussion in 'Traditional Customs' started by Foulkkustoms, Jul 4, 2014.

  1. Foulkkustoms
    Joined: Sep 24, 2012
    Posts: 86

    Foulkkustoms
    Member
    from Arkansas

    Im getting readt to lower my pickup truck the wheels that are on it now is to wide. It will hit the top of my fenders. I have a 4" backspace right now and are 15x7. I want to go with 15x6 how do I figure out what backspace and offset I need. Thanks and happy 4th guys

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  2. Fenders
    Joined: Sep 8, 2007
    Posts: 3,921

    Fenders
    Member

  3. missysdad1
    Joined: Dec 9, 2008
    Posts: 3,307

    missysdad1
    Member

     
  4. So lets look at your current size -
    15x7 with 4" back space = fitment issues.

    A switch to 15x6 with the same 4" BS will move the out side rim lip 1" towards the center and the inside will remain the same place.

    Should you find 15x6 with 3" backspace - the outer lip will remain the same location as it is now but the inside lip will move 1" away from center .

    Then the tire size and bulge comes into play. There's a lot of variables there.
     
  5. Fenders
    Joined: Sep 8, 2007
    Posts: 3,921

    Fenders
    Member

    31vicky had the answer if he kept going... If you want to keep the center of the tire in the same location, then 4" bsp on 7" is equivalent to 3.5" bsp on 6"
     
  6. Foulkkustoms
    Joined: Sep 24, 2012
    Posts: 86

    Foulkkustoms
    Member
    from Arkansas

    Im trying to tuck my wheel in my fender wat all do I need to measure to make sure wat I need

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