6.5x15 et34 = 7x15 et40 ?

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  • fporro
    E30 Mastermind
    • Dec 2003
    • 1859

    #1

    6.5x15 et34 = 7x15 et40 ?

    swaped lips around, mainly RS's 5.5 inner for the RF's 6" ones.

    Did that increased offset by 6mm ?
    et34 bumped to et40 ?

    Last edited by fporro; 08-25-2006, 07:21 AM.
  • PiercedE30
    R3V Elite
    • Apr 2005
    • 4220

    #2
    I would think that it would decrease it some since the hub face is being moved more inward vs. where the outter edge is.......not sure how I could explain it better.
    My 2.9L Build!

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    • fporro
      E30 Mastermind
      • Dec 2003
      • 1859

      #3
      uhm,
      used this image to visualise it ...

      basically, increased inner lip by 0.5 inch = 12mm

      that draged centerline 6mm torwards inner edge, hence increasing distance from original offset location.

      outer lips are same size so hub/rim contact area did not move.

      is that so ?

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