12:32CDL Air Brakes Test 2024 (MOST Common Questions and Answers)
Driving Academy | CDL Truck Driving School
Watch on YouTubeSpecifications
- Brake Disc Thickness
- 30 mm
- Centering Diameter
- 79.1 mm
- Height
- 77.2 mm
- Minimum thickness
- 28.4 mm
- Outer Diameter
- 324 mm
- Brake Disc Type
- internally vented
- Bolt Hole Circle Ø
- 120
- Number of Holes
- 5
- Surface
- Coated
- Number of bores
- 1
- Weight
- 11.426 kg
Vehicle Manufacturers
BMW(4 items)
BMW
3411 6753 221
BMW
3411 6767 269
BMW
3411 6864 905
BMW
3411 6864 906
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Other parts in the same category.
About this part
A 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.
Frequently asked questions
Does VKBD 80138 V1 have compatible (OE) part numbers?
Yes — it is linked to 4 OE-compatible part number(s), shown in the compatible parts section above.