I agree with the above. My 911 used to rub its arches on std wheels when on track with sticky track tyres due to it running lower, when we increased the stiffness of the torsion bars and put turbo shox on it the bloomin thing still used to rub over big kerbs or when very sideways. SO I would look to chop the arches a bit and pull or roll them and not just at the top, then sort the roll etc.