Here's an F10 M5 with some very old designed Hartge Wheels on it. They look to be 21". I have to say that they look much better on the F10 M5 than they did on the E60 M5. I would never put them on the M5, they are very heavy wheels and wiegh like a million pounds. I pity the fool who puts wheels on their M5 without considering the weight difference.
Also I don't know what kind of exhaust the M5 has in the video but it sounds so damn good. It might be a Hartge exhaust, but I am not aware of them having designed a new system for the F10 M5. I also wonder if this M5 has catless downpipes as well. It's very loud. I'm hoping to have a setup that sounds similar.