10:20Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same
Smart Drive Test
Watch on YouTubeImage pending
Brake disc
BMW
3421 4 031 725
BMW
3421 6 764 649
BMW
3421 6 769 271
BMW
3421 6 855 002
BMW (BRILLIANCE)
3421 4 031 725
BMW (BRILLIANCE)
3421 6 764 649
BMW (BRILLIANCE)
3421 6 769 271
BMW (BRILLIANCE)
3421 6 855 002
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10:20Smart Drive Test
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5:57
9:44Driving Academy | CDL Truck Driving School
Watch on YouTubeA brake disc (rotor) is the metal disc that the brake pads clamp onto to slow the wheel.
When the pads press against the spinning disc, friction converts the vehicle's motion into heat, which the disc dissipates; commercial vehicle discs are large and heat-resistant for high loads and repeated braking.
Mounted at the wheel as part of a disc brake. Because braking is safety critical, discs and pads are inspected on schedule and replaced by axle set by a qualified technician.
Yes — it is linked to 8 OE-compatible part number(s), shown in the compatible parts section above.