If you have CCB's and looking for some cost permissive alternatives for replacement, this might be helpful. This is is on my radar because I don't know the current weight of my rotors and there are no real metrics on what "lifetime" means as far as I can find.
https://www.rebrake.de/en/brand/bmw/m6/
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2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3