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GM Rally wheel run out specs

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Old Jan 4, 2017 | 03:30 PM
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Default GM Rally wheel run out specs

Anyone know what the factory run out specs are? I have a vender telling me .025 to .030 both lateral and radial is within GM specifications.
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Old Jan 4, 2017 | 04:07 PM
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Hi d,
The information I could find seems to indicate the original wheels were not as 'true' as we would think or would like.
.020 to .030+ seemed to be what people reported quite commonly.
The point was made that this is another reason for careful, experienced balancing of the tire and wheel combination.
Regards,
Alan

Last edited by Alan 71; Jan 4, 2017 at 04:59 PM.
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Old Jan 4, 2017 | 04:51 PM
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Originally Posted by Alan 71
Hi d,
The information I could find seems to indicate the original wheels were not a 'true' I we would think or would like.
.020-.030+ seemed to be what people reported quite commonly.
The point was made that this is another reason for careful, experienced balancing of the tire and wheel combination.
Regards,
Alan
Alan,
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Old Jan 4, 2017 | 04:54 PM
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Originally Posted by dntoearthman
Alan,
Thanks Alan I just got off the phone with Wheels Vintique they over less than .015 on there rims at one point I recall being told .012 was spec for the GM wheel. Yes you are correct about professional mounting & balancing, most shops get you out the door asap.

Thanks Hope you have a great new year.

Mike
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Old Jan 4, 2017 | 05:13 PM
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This out of the 1969 Chevrolet Chassis Service Manual.


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Old Jan 4, 2017 | 05:47 PM
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Originally Posted by 69vette19467
This out of the 1969 Chevrolet Chassis Service Manual.


.0625 no wonder I can't find GM rims that i would not consider damaged
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