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| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
 BMW |
| Manufacturer | Productnumber |
| BMW | 34 21 4 031 275 , 34214031275 |
| BMW | 34 21 4 031 725 , 34214031725 |
| BMW | 34 21 6 764 649 , 34216764649 |
| BMW | 34 21 6 769 271 , 34216769271 |
| BMW | 34 21 6 855 002 , 34216855002 |
| Usage numbers |
A brake disc (also called a brake rotor) is a key component of the disc braking system. It rotates with the wheel and is clamped by the brake pads through the brake caliper when the brake pedal is pressed. The resulting friction converts kinetic energy into heat, slowing down or stopping the vehicle efficiently. High-quality discs ensure stable braking, heat dissipation, and long-lasting performance.
There are several types, each designed for specific driving conditions:
Solid Discs: Standard design, used in front or rear of smaller vehicles.
Vented Discs: Feature internal cooling channels for better heat dissipation.
Drilled or Slotted Discs: Provide improved cooling, cleaning, and wet-weather performance (ideal for performance or heavy-duty use).
Always match the type to your vehicle’s original specifications.
Common symptoms include:
Vibration or pulsation in the brake pedal or steering wheel when braking
Squealing or grinding noise
Blue discoloration or scoring marks on the disc surface
Reduced braking efficiency or longer stopping distance
Uneven pad wear or grooved surface
If any signs appear, have your discs inspected and measured — replacement is usually required if disc thickness is below the minimum limit.
To ensure compatibility, confirm the following details:
OEM or Part Number
Vehicle make, model, year, and engine size
Axle position (front or rear)
Disc dimensions (diameter, thickness, height, center bore)
Type: solid, vented, drilled, or slotted
If you’re unsure, share your VIN or chassis number with us — our team will verify the correct fitment.
Yes, it’s highly recommended to replace brake pads along with brake discs. Old pads can cause uneven wear or reduced friction on new discs. Replacing both ensures optimal braking performance, smooth bedding-in, and longer component lifespan. Always perform proper run-in (bedding) procedure after installation.
Yes. Our brake discs are manufactured to OEM standards using high-carbon or cast-iron materials for maximum strength and thermal stability. Each disc undergoes balancing, hardness, and runout testing to ensure vibration-free and consistent braking. All discs come with a manufacturer’s warranty and are suitable for professional workshop installation.
Discover the world of high-performance Brake Disc parts from TRUCKTEC AUTOMOTIVE. Our selection offers a comprehensive range of top-quality auto parts designed to enhance your vehicle's performance, protection, and longevity.
From advanced brakepads crafted from carefully selected materials to specialized products such as driveshafts and injectors, TRUCKTEC AUTOMOTIVE ensures optimal and reliable wear protection even under the most demanding conditions. With a focus on corrosion prevention, these products guarantee a dependable defense against rust and corrosion, keeping your vehicle in top-notch condition.
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