Originally Posted by Pssst...passed you
I still do not get how adding an equal width spacer would not rectfy the situation.
Its all dependent on The Hub Design of each wheel. Notice how the faces of RCs, Arisots, RSIIs, and Tarmacs are flat and have a steep tall hub.
Concave wheels have thinner hubs and are recessed toward the centerline of the barrel. Usually the spokes dont curve outward right out of the hub which causes the clearance issues. If the boxsters were on 13in+ rotors then there would be more forgiveness since the spokes are further outward from the centerline of the wheel barrel towards the lips of the wheels.