I never understood that RS, M or AMG version shouldnt be a convertible way of thinking. Its not like they dont offer a coupe version as well so if youre concerned about performance buy the coupe. If they can make a car that outperforms most others on the road all while having 3/4's of the top removed Im all for it. If I had to guess Id say 95%+ (coupe or conv) never even set foot on a track to begin with.