Interesting problem you have here as the offsets are not THAT far off what is usually recommended for a 255 rear tyre. If I'm not mistaken, the higher the offset, the more inwards the wheel comes to the vehicle.
I'll be running a 19x8 ET48 225/35 and 19x9 ET50 255/30 front and rear on Michelin PSS. Hopefully I won't get any rubbing on stock suspension....though I am looking at the BMW PS as well after the wheel change. Hopefully I'll be ok too?
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