I believe the integrity of your performance tire has been compromised. It's hard to see from the photo, but it appears to be more than cosmetics. Take it to the dealer and have them check it out for you.
Peronally if my family rides in my car with me and I travel over 50 mph, I would most probably replace it.
Post another pic from a couple of feet away.
09'M3 JerezB/Tech/Cold/Prem/PDC/SR/Black Leather/ANTHRACITE Sycamore/IPOD/USB/Rear Sunshade/Premium Sounnd/6MT***Just Hit The Ground! Delivery 02/25/2009***