Jim-
I fully realize that this is probably not Kosher as far as Porsche is concerned, but I dont see why, if dont correctly, this would cause any concern for failure.
The real concern as far as I see it, is ensuring that the wheel's centerline is aligned perfectly parallel to the lathe so that, once milled, the mating surface is still parallel to the wheel centerline to avoid shimmies and vibration, etc.
Patrick
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