
TRW · Part number DF8050S · NZ$293.00 incl. GST
Right then, for your zippy European ride like the BMW 2, 3, or 4 Series, disc brake rotors are the unsung heroes of your stopping power, letting those pads clamp down and turn all that go-fast energy into heat to bring you to a safe halt.
NZ$293.00 including GST. Part number DF8050S.
> Alright team, let's talk about your BMW's stopping power. Those disc brake rotors? They're the real MVPs, precision-engineered metal discs that grab those brake pads to create the friction that slows you down. But over time, all that heat, friction, and hard mahi can cause them to warp, crack, or get too thin. When that happens, your braking performance goes out the window, which is a real bummer, especially for those performance-focused European beauties that demand nothing less than consistent, powerful stops.
Symptoms That Led You Here
• Vibration or pulsation felt through the brake pedal or steering wheel when braking.
• Squealing, grinding, or scraping noises during braking.
• Increased stopping distances.
• Visible scoring, grooves, or discolouration on the rotor surface.
• A soft or spongy brake pedal.
Will it pass WOF?
No. Worn, warped, or damaged brake rotors will cause your vehicle to fail its Warrant of Fitness (WOF) in New Zealand. Effective braking is a critical safety requirement.
DIY or Workshop?
Difficulty: 6/10 (Moderate)
Estimated Time: 1-2 hours per axle
Tools Required: Jack and jack stands, wheel nut wrench, brake caliper compression tool, torque wrench, socket set, brake cleaner, wire brush, potentially an impact wrench.
Expert Recommendation
CARFIX and Bob recommend replacing disc brake rotors when they show signs of wear beyond manufacturer specifications or when brake pads are replaced, especially on performance vehicles like your BMW. This ensures optimal braking efficiency, safety, and prevents premature wear on new pads. The TRW rotors are an excellent choice, known for their quality and performance, making them suitable for the demands of European vehicles. Bob @ CARFIX is always on hand to help you work out exactly what part you need for your BMW. Make sure you head over to Bob's Shop for a chat!
Fitment Notes
These disc brake rotors are specifically designed for various BMW 2, 3, and 4 Series models, including the 228i, 430d, 325d, M240i, 330i, 430i, 428i, 330d, and 320i. Always double-check the specific year and sub-model to ensure correct fitment, as variations can occur even within the same series.
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🛠️ Bob's Pro Tip: Do the Job Right!
> If you're swapping out these parts on your vehicle, always install fresh brake pads. Check out our compatible TRW Brake Pads (SKU GDB1942) to ensure a perfect bed-in and get the job done properly first time!
🧰 What Else You'll Need:
• Safety First: Never work under a vehicle supported only by a jack. Always secure it on heavy-duty safety jack stands.
• Brake Dust Protection: Keep a pack of Nitrile Gloves handy to protect your hands from grease and dust.
• Clean and Prep: Use Brake Cleaner to clean the anti-corrosion shipping oil off the new rotors before mounting the calipers.
• Lubrication: Apply caliper grease to caliper slide pins and pad contact points to prevent squealing.