Big Brake Options A7 2016
 

I have searched and searched with no luck. I have a A7 2016 and have been looking for a big brake option. I am running HRE FF04 21xx21.5 rims on 285/30R21. The only problem is that I would hate to buy something and not have the clearance I would need.
If anyone has had some experience I really would appreciate the help.
I am not sure if S7 or RS7 would fit? I have been told that some Macan would fit or even the SQ5 are the same size as ours?

Thanks for the help.