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Home >> BMW >> 2021 >> M4 Competition >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes -- Repair M4 (G82 & G83) >> 34 21 Rear Brakes >> 34 21 320 Removing and installing/replacing both brake discs with carbon ceramic brakes (M4 2021-2023) >> Installing rear brake discs (carbon ceramic brake)

Installing rear brake discs (carbon ceramic brake)

NOTE: In the event of a repair, an individual brake disk (front axle/rear axle) may be exchanged. When replacing a brake disk (especially on the front axle), an exchange of the brake pads by axle is recommended because of the risk of initial skewing when braking during the break-in phase and the associated risk of repeat repairs. From a technical point of view, however, this is not absolutely necessary. Depending on the state of wear and the contact pattern of the brake pads, decisions must be taken on an individual basis according to the situation.
G15332768Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Brake disc to rear wheel hub 
M8 Replace screw. Tightening torque  16 Nm
TIGHTENING TORQUE SPECIFICATIONS

Brake anchor plate to rear wheel carrier 
M12 Replace screw. Tightening torque  130 Nm
G15332769Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work