The cracks around the holes are quite normal for Porsche drilled discs. As long as they don't move from one hole to the other, the disc should be OK. Check with your local Porsche dealer if the discs need replacement.

Due to the central wheel locking system and past issues, make sure that you maintain your car at an official dealer who has the right information (and tools) to do the job.

As to the usage of brake pads, it depends what you want: Track performance (and loud squeaking) or less noise and worse track performance.  I would take the Michelin Sport Cup, not the Pirelli.

Have fun! 


--

RC (Germany) - Rennteam Editor Porsche Panamera Turbo S, Cayenne GTS (958), BMW X3 35d (2012), Mini Cooper S Countryman All4