Quote:
Originally Posted by BTM
Am I mistaken in saying that it is possible to grind down the hubs and increase offset? That might be an option as well. I've definitely seen style 5's on a Z4 before
Not my style, but found the picture:
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It
may be possible to remove material from the mating surface of the wheel, yes.
May is the critical word. If there is not enough material left, there is a very, very real risk of a catastrophic failure; i.e., wheel flange pulling off of the wheel, wheel rolls down road unatached to car, car meets telephone pole/rock/barrier/other vehicle, you die. You'd want to speak directly with an engineer of the wheels in question about this.
More importantly, going at any wheel flange with a grinder would be like trying to restore a fine piece of art with a belt sander, or something. Do not do this!! The wheel flange, that mates up to the hub/rotor has to be as near perfectly parallel with the rim as possible. When it's out of parallel, it's called runout, this is a bad thing. All wheels will have some runout but on the best wheels it's miniscule. Aside from a CNC shop with an engineer or highly experienced operator, there is basically no practical way to remove material from the flange in any precise way. I think it would be hard to find a CNC shop that would be willing to do this simply for liability reasons.