The R1 Concepts Geo-Carbon drilled-and-slotted rotor for the rear right of 2010–2019 BMW 640i xDrive Gran Coupe matches that wheel position and model years. The drilled and slotted surface with Geo-Carbon treatment assists thermal control and pad cleaning to maintain reliable brake feel. This description follows the explicit rear-right Gran Coupe fitment noted in the product data.
R1 10-19 BMW 640I Xdrive Gran Coupe Rear Right Drilled & Slotted Geo-Carbon Rotor