Huh, that was quick. Just announced some weeks ago, the Audi RS4 already received an upgrade by Abt Sportsline. And it's pretty impressive!
German tuner Abt Sportsline believes that 250 km/h isn't enough for such a performance car like the Audi RS4, therefore they "killed" the speed limiter and enhanced the top speed to 282 km/h.
In addition they provide some new 20 inch alloy rims as seen on the pictures.
GermanCarBlog