The standard Brabus alloys are very soft and they often buckle, so it's not at all uncommon. Secondhand wheel's pop up from time to time on the forum and on ebay. Most Brabus drivers buy the wider rear wheels and put them on the front to aid traction.
So if that's the only problem the car has, then I don't think it's such a big deal. Are the other more important, things alright ? Intermediate oil changes ? Cam belt change ?