Well nothing broken on the car, but my new 4.8is OEM rotor had a crack before I even installed it
Gotta love HuskerParts customer care though, made it super easy and understanding.
Already have a new one being overnighted

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2018 M2 LBB / BLK [DINAN] [Mperformance]
2018 X5 50i AW / BLK

Former:
2004 X5 4.8is BSM / BLK
2003 540i SG/ BLK [Euro M5 spec]