Looking at other posts it seems that Pirelli P Zero 20" wear very slightly more on the outside and Goodyear Excellence wear a huge amount on the inside edge. So maybe it is the tyres rather than the car set up? Certainly seems sensible to avoid the Goodyear product for this vehicle.
2010 F07 5GT SE Sapphire Black with Ivory White/black interior & fineline unlacquerd trim: Dynamic, Visability and Prof Media Packs. DAB radio, Elec front seats with driver memory, Rear seat heating, Auto tailgate,, Sun Protection Glass. ISTA/P 126.96.36.199 Road maps prem 2011