BMW 5 Series F10 518d 520d 520i 523i 530i, F11 520i 523i 2010-17 Compatible Rear Brake Discs, Drilled Grooved 330mm. Vented - Studs Disc diameter 330.0mm Disc thickness 20.0mm.Overall height 69.0mm Centre diameter 75.0mm. If your fitment is not listed check our other items in our shop. During checkout please include a current telephone in case we need to contact you. Key Benefits of MTEC Discs. The grooves help deglaze the pad and prevent fade which occurs when the pad and disc gets too hot! The holes help to keep the discs cool and dissipate heat! The grooves also help to channel water away from the disc surface! They add the finishing touch behind alloys! IV HS KA27-28 KW PA20-49 PA60-78 PH17-26 PH30-44 PH49-50 ZE TR21-25.