I'm running 8.5x18 et35 with 215/40 - I'm pretty damn low (that's a technical term!) and I'm running stock arches (other than removing the front splash guard bolt) don't see why the extra 1/2 inch would make it any worse - however you'd have to put a but of camber on the back, or just don't run it too low.
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Sometimes just touches, but only just.