Opel GT Wheel Offset
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Thread: Opel GT Wheel Offset

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    Opeler
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    Oct 2009
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    Opel GT Wheel Offset

    I am trying to figure out what an acceptable wheel offset is for an Opel GT. I have read on this site that the stock Opel GT Rims are 13 x 5, ET25.

    I recently bought a 1973 parts car with "73 Ralley" wheels, 3 of the wheels are stamped "GT" and one is stamped "WAGON". The "WAGON" stamped Wheel is marked 13x5 ET37. The wheels all measure the same.

    Here are my questions:
    -Did the GT come with ET37 offset wheels, at least in 1973?
    -Do you want to adjust offset to match the backspace if you are changing rim width? How much can you change it w/o effecting suspension geometry?
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    Last edited by opelgt1976; 11-09-2009 at 06:24 AM. Reason: Add Picture

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