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Thread: wheel offset

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    Bodger

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    wheel offset

    hi
    i have a atlas axle on my mk1 escort with bubble arches
    and need no what offset wheels i need ?
    i have got from the half shaft wheel face
    4 inches at the front from face
    6 inches at the rear of face
    so need 10 inch wide wheels max overall width can be narrower tho
    Last edited by kirk honda; 29-09-2008 at 14:40.

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    Re: wheel affset

    If I understand your measurements correctly, a ET-25 wheel should fit nicely in the space you have.
    Remember that a 9x13 wheel actually is about 9.75 inch wide in totall.

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    Spanner Monkey ENOFORD105E's Avatar

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    Re: wheel affset

    Hi

    can you clarify....do you have 4" outboard or 6" outboard???

    If its 4" outboard then you need ET25.....if its 6" outboard you need et-25 as our Netherlands friend has suggested.

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    Bodger

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    Re: wheel affset

    yes 4 inches out board
    thats from wheel matting face to outer bubble arch

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    Re: wheel offset

    To retain you 4" outboard ...as previously suggested you need a 9" wheel at ET 25
    Alternativly you could run an 8" wheel at ET 12 or a 7" (though I'd doubt you'd want to!!)at ET0

    Hope that helps

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    Bodger

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    Re: wheel offset

    so the 8" wheel at ET 12 would have a biiger dish to the wheel yes
    and the
    9" wheel at ET 25 wouldnt have much dish to the wheel at all

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    Re: wheel offset

    nope positive offset means the hub is closer to the outside edge of the wheel, so less dish for more dish you need more negative offset... but then its dependant on the overall rim width

    a 9" wheel is 25mm wider than an 8", with the offsets youve got there, it will have slightly more dish (12mm ) i think

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    Re: wheel offset

    actually no, they would have exactly the same dish (or near enough) and the inch would be made up in backspace... i hate calculating offset, it bends my mind

    if ive got it right... a 9" rim is 25mm wider than an 8", with the same offset it would have 12.5mm extra either side, so if it has a positive offset 13mm more than the 8" youve brought the outside edge to the same point as the 8" and shifted the extra width to the back

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    Racer Decade Plus User andypipe's Avatar
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    Re: wheel offset

    Last edited by andypipe; 08-10-2008 at 10:09.


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    Re: wheel offset

    This may help
    1. Measure the overall width of wheel (OW)
    2. Measure the 'T' dimension, which is the measurement from the back of the bolt up face to the outside of the inner rim
    3. Divide the overall width by two which gives the centre line
    4. Subtract the centre line figute from the 'T' dimension

    ET=T-OW
    2



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    Re: wheel offset

    or stealing a link to a wheel offset calculator, which says what i said, only being less confusing

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    Racer Decade Plus User andypipe's Avatar
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    Re: wheel offset

    My 9x15 are ET-25
    To fit a 8x15 on the front of an escort you need ET0
    To fit a 7x15 on the front of an escort you need ET12


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    Spanner Monkey ENOFORD105E's Avatar

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    Re: wheel offset

    Hi again

    How I HATE THE TERM DISH!!!!!

    i'TS MEANINGLESS!!!. The 2 wheel options would have the same amout of wheel coming outboard...the speciafic design of wheel you choose will dictate if you have more cosmetic rim. If the were both 3 piece using the same format of centre then they would both use the same outer rim section

    Not aware of anyone making a classic wheel in 9" with an ET 25 though so you my need to go 3 piece anyway for that option

    What diameter where you looking at ? 13" or 15 (or something else)

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    Bodger

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    Re: wheel offset

    15 inch wheels
    and i think its going to be easyer to go for an 8 inch wheel
    judging buy what you say

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    Spanner Monkey ENOFORD105E's Avatar

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    Re: wheel offset

    deffo...the 8" Compomotive ML is ideal as it looks good and is available in a variety of offsets (they'll even machine them specific to what you want).....and they are just down the M54 from you!!!

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