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Thread: Rear Wheels Not Centered

  1. #1
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    Question Rear Wheels Not Centered

    Does anyone know why on some MN12s (mostly later model ones), the rear wheels are not centered in the wheel opening, but are forward a couple of inches?

    Michael

  2. #2
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    Quote Originally Posted by Cyboman View Post
    Does anyone know why on some MN12s (mostly later model ones), the rear wheels are not centered in the wheel opening, but are forward a couple of inches?

    Michael
    I have never heard of that, but I would have a 4-wheel alignment done because that is what caster adjustment changes. Worth a check at least.
    Me-89 SC 5-speed 1.7 Autorotor twin screw over 443rwhp 20psi
    Her-95 SC auto 1.7 KB 400rwhp 17psi
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  3. #3
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    Very common, my car is one of them. I take there is some adjustability on the main IRS mounts. Ive never taken down my IRS unit so it was that from the start. You could try to recenter it but I dont see issues as long as the wheels are aligned to compensate.
    1994 Supercoupe 5spd Custom, first to buy a 2.1L Big Bore Kenne Bell Twin Screw for an SC
    Old numbers on 1.7l AR SC: 415WHP off the bottle-12.2535 @112.18 off the bottle. Best TQ to date 516ft/lbs, New numbers 480whp on dream crusher.
    1990 35th 5spd 2011 Carlisle 1st place class winner. 12.9@108MPH 1.9
    2013 GT/CS 5.0L FRPP 2.3l Whipplecharged family weekend car
    2005 SAAB 9-3 Aero 2.0L TURBO Work Mule

  4. #4
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    Quote Originally Posted by mywhite89 View Post
    I have never heard of that, but I would have a 4-wheel alignment done because that is what caster adjustment changes. Worth a check at least.
    threre is no castor measurement for rear wheels.

    like said there is probably someting moved in the rear of the car, an alingment is probably needed anyway.

  5. #5
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    Hmm, sorry about that. been a long time since I did mine. Now I think of it, I guess theirs not, unless you can move the whole subframe a bit.

    Chris
    Me-89 SC 5-speed 1.7 Autorotor twin screw over 443rwhp 20psi
    Her-95 SC auto 1.7 KB 400rwhp 17psi
    my email

  6. #6
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    Quote Originally Posted by ricardoa1 View Post
    Very common, my car is one of them. I take there is some adjustability on the main IRS mounts. Ive never taken down my IRS unit so it was that from the start. You could try to recenter it but I dont see issues as long as the wheels are aligned to compensate.
    The issue is it just doesn't look right. The wheel should be centered in the opening. If one were to go with bigger (say 20") wheels it would look worse, and could possibly rub in places where it would not otherwise.

    Does anyone know if the subframe could slide back in it's mounts that much to correct this?

    Michael

  7. #7
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    Could be worn out control arm bushings.

  8. #8
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    20 inch wheels are for one ton trucks.

  9. #9
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    Quote Originally Posted by Cyboman View Post
    The issue is it just doesn't look right. The wheel should be centered in the opening. If one were to go with bigger (say 20") wheels it would look worse, and could possibly rub in places where it would not otherwise.

    Does anyone know if the subframe could slide back in it's mounts that much to correct this?

    Michael

    There has to be some play, if its worth the hassle to you back out the IRS bolts and lift the body with a jack and push to the side the body and set it back down then rebolt it. But if you are in a rust prone area I would not attempt it.
    1994 Supercoupe 5spd Custom, first to buy a 2.1L Big Bore Kenne Bell Twin Screw for an SC
    Old numbers on 1.7l AR SC: 415WHP off the bottle-12.2535 @112.18 off the bottle. Best TQ to date 516ft/lbs, New numbers 480whp on dream crusher.
    1990 35th 5spd 2011 Carlisle 1st place class winner. 12.9@108MPH 1.9
    2013 GT/CS 5.0L FRPP 2.3l Whipplecharged family weekend car
    2005 SAAB 9-3 Aero 2.0L TURBO Work Mule

  10. #10
    Join Date
    Feb 2008
    Posts
    138
    My 96 is like that too, I've seen it before. Oh, and I had Ford do an alignment just a couple of months ago. I watched the tech adjust the right rear wheel alignment slightly.

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