2016 BMW M4 GTS Spied testing on Nurburgring , and it sounds brutal !

Have you seen the new GTS version of the BMW M4 testing on the Nurburgring? If not,you will see that this BMW comes with no rear seats, ceramic
brakes, carbon fiber additions all over and obviously with more changes then the normal BMW M4. The 2016 BMW M4 GTS sound like is equipped with more horses under the hood and it looks like is equipped with the BMW M Performance Exhaust.
Furthermore we suggest to watch the video, also feel free to share with us your opinion