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Wheel rim spacing

Discussion in 'General' started by NeddyBear, Nov 9, 2018 at 12:28 PM.

  1. NeddyBear

    NeddyBear Veteran Mountain Biker

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    17 x 7 Streeter 5 x 120.jpg Does anyone know the standard front n backspacing for a VX Commodore sedan, does this look right. 5 x 120 Commodore 17 x 7 backspace 4.25 front space 3.7
    Castmaine Rodshop has these 17 x 7 Streeters available in various spacing's and for our Rod I was wanting to use the minimum standard fitting.
     
    Last edited: Nov 10, 2018 at 1:47 AM
  2. _R_J_K_

    _R_J_K_ Well-Known Member

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  3. Bigfella237

    Bigfella237 Active Member

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    The rim width is measured at the surface where tyre bead mounts, whereas backspace (and frontspace) is measured at the very outside of the flange lip.

    General rule of thumb is ½" per side difference between the two points, so if you add backspace + frontspace it should generally come out 1" greater than the rim width.

    So if you have a 17x7" rim with a 4.25" backspace, your frontspace should be around 3.75" (pretty close to your measurements), which would make the offset +0.25"

    Andrew
     
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