Here is a PM I received from member 67Charger on the same subject a few days ago...
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I went with 15x8's with 4.5" b.s., but now that they are on there, I realize I should have gotten the 15x10's with the same b.s.. Running 28x10.5 ET drags, the sidewall will rub the inner wheelwell during sharp turns. If the wheel was 2" wider with the same b.s., the center of the tire would move to the outside by 1 inch which would give me the inside clearance I need, straighten the sidewalls out and get the tread flatter to the ground. I currently have 2 1/8" between the wheel opening and the outside of the tire.
As always, your mileage may vary, but on MY car, this is what I've found. Hope it helps!
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