How a car works

All partsBMW M4 CSLWheel assembliesRear left wheel › Brake disc

Brake disc

Part of Rear left wheel · about $3,400 to replace

What it is

380 mm M Carbon-ceramic disc.

What it does

Converts kinetic energy to heat when the pads clamp it.

How it fails

Weighed, not measured: replace when 60 g lighter than new. Never bed with the parking brake hot.

MaterialCarbon-fibre reinforced silicon carbide, aluminium hat
Spec380 × 28 mm
6.4 kg
Brake disc highlighted on the car

Appears at

Rear left wheelRear right wheel

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