Back Space for 15X8 wheels on '70 Mustang

Discussion in 'Classic Mustang Specific Tech' started by rbonitz, Oct 6, 2003.


  1. rbonitz

    rbonitz New Member

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    Recently bought a set of the American Racing "Torque Thrust D" wheels for my 1970 Mach 1 from a mustang shop in my area. I went with 15X7 for front and 15X8 1/2 for the rear - with 225mm front tires and 245s in the rear.

    I assumed that the wheels would have the correct back spacing (4 1/2) because it was a mustang vendor, for a mustang etc. but I believe what they sold me was the standard wheel which has a 3 3/4 back space. The rear tires stick out too far, just don't look right and rub on large bumps.

    I see that you can buy the Torque Thrusts wheels with a custom back space
    http://www.wheelsforless.com/search_result.asp?Product_ID=2055800 - I guess that is what I'll have to do...

    A couple questions...

    Any one else running these wheels on a '69 or '70 - did you spring for the "custom" wheels?
    How do I measure the back space on the wheels I have and will a 4 1/2 inch back space definitely work with these tires?

    Any help appreciated....
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  2. rbonitz

    rbonitz New Member

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    Just found out that the Torque Thrust "D" is a one piece wheel with fixed back spacing (3.75")... The URL I posted is for a different, two piece wheel (still from American Racing)- it's slightly different with a polished lip - You can order that one with custom backspace...

    Wish I had known this before I bought the "D"s....


    Ray
    #2
  3. 67GTCOUPE

    67GTCOUPE Founding Member

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    Ya, I bougth American Racing S-200's.......same damn thing on my 67 coupe! Rubbs in back and front...changed out front tires to smaller size...ok now, but rear rubs over big bumps.

    :bang:
    #3
  4. '69Stang

    '69Stang Founding Member

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    Sorry to hear that guys. That is just **** poor product development in my opinion. If you decide to got to the Magnum 500's 15x8's they fit fine.
    #4
  5. jasonn

    jasonn Founding Member

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    I am looking at the same question. I am going to the pro stars though. So exactly what backspacing is needed then??
    #5
  6. xjmd2007

    xjmd2007 New Member

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    Magnum 500 wheels

    '69Stang,

    Where can one buy a set of 15 x 8 Magnum 500 wheels??

    Thank you!
    #6
  7. pabear89

    pabear89 Active Member

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    Where can one buy a set of 15 x 8 Magnum 500 wheels??

    Check any good Mustang Supplier, but be ready to spend $.

    PB
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  8. 68GEETEE

    68GEETEE Member

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    thanks for the post, I was strongly thinking of the same wheels for my Stang, would have run into the same problems.
    #8

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