After just 12k miles, I must replace my OEM 255/40-18 Dunlop SP Sport 9000s due to inner-edge wear and "cupping".
This seems very premature to me as I'm not an aggressive driver, have not tracked my RS6, and have been prudent in maintaining recommended tire pressure and rotation schedule.
My dealer believes 10 to 15k miles is to be expected due to the RS6's suspension. I'm not so sure.
I'd appreciate your feedback and tire wear experience.
Thanks - Mark in Phoenix