I was referring to the difference between the M Sport brakes and BMW M Performance brakes.
I also have ordered M Sport brakes (blue) for mine, as I do not think for road use the M Performance ones would provide any real advantage. If I was going to do a lot of track work I may have considered the M Performance, though I think I would have then gone for Brembo instead.
If you look at the BMW performance cat I posted the link for, you will see the performance brakes are vented, drilled and slotted and the caliper is slightly larger and a different design to the blue units.
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