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BMW Z4 COUPE (E85) Rear Ventilated Brake Disc 2004 on
  • BMW Z4 COUPE (E85) Rear Ventilated Brake Disc 2004 on

BMW Z4 COUPE (E85) Rear Ventilated Brake Disc 2004 on

BKDC6017
BMW

BMW Z4 COUPE (E85) Rear Ventilated Brake Disc 2004 on

Nationwide Delivery - Door to Door

This is a Premium Economy Safety Critical Brand Brake Disc for your vehicle. It is an affordable OE-specification aftermarket replacement product. It is 100% factory tested and built to strict quality control standards to ensure high performance and is guaranteed to deliver better braking.

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Description

BMW Z4 COUPE (E85) Rear Ventilated Brake Disc 2004 on

Brake Discs – OEM-Spec Stopping Power

Precision-machined brake discs restore smooth, confident braking. Built to OEM specification for fit, balance and thermal stability—ideal for South African roads and driving conditions.

Why choose these discs

  • OEM-aligned metallurgy and hardness for durability
  • Balanced rotors reduce vibration and steering shake
  • Heat-treated to resist warping under repeated stops
  • Coated to limit corrosion and ease future removal

Signs your discs need replacement

  • Pulsing or vibration through the pedal or steering under braking
  • Grinding noises even after fitting new pads
  • Visible grooves, scoring or blue heat spots on the rotor face
  • Longer stopping distances or brake fade on descents

What’s included

  • Brake disc(s) matched to the application (check quantity per axle)
  • Protective coating/packaging where applicable

Confirm by OE/part number, diameter, thickness, vented/solid and bolt pattern. If unsure, contact us with your VIN and we’ll confirm fitment.

Fitment best practice

  • Always fit new pads with new discs to prevent glazing and uneven wear
  • Clean hub face thoroughly; measure runout; torque wheel bolts to spec
  • Bed-in new discs and pads with progressive stops (no hard braking initially)
  • Do not machine discs unless the manufacturer explicitly allows it

FAQs

Do I have to replace pads with discs?
Yes, strongly recommended. Old pads can damage fresh rotors and reduce braking performance.

Drilled vs slotted vs plain—what’s best?
Plain is ideal for daily driving. Slotted helps shed gas and dust. Drilled improves cooling on performance cars but may be noisier.

Why do discs warp?
Heat imbalance, contaminated hub faces, incorrect torque, or poor quality components. Proper prep and torque prevent most issues.

How long do discs last?
Typically 40,000–80,000 km depending on driving style, loads and terrain. Inspect thickness and runout during services.

Can I DIY?
Yes if you have the right tools and torque specs. Otherwise use a professional fitment centre for safety and warranty protection.

Warranty & important notes

  • Covered against manufacturing defects (materials/workmanship)
  • Warranty requires correct fitment, new pads, and proper torque procedures
  • Track use or improper bedding-in may reduce service life
Need help confirming fitment? WhatsApp 069 777 2 777 or call 010 970 6009. Have your VIN ready for the fastest assistance.
Product Details
BMW
BKDC6017
New

Data sheet

Description 1
Brake Discs are safety-critical parts that must be changed at regular intervals. It offers a far more reliable stopping system compared to brake drums. Brake discs also provide a faster cooling system as heat is more easily dissipated.
Defective Symptoms 1
You will have a shudder on your brake pedal or steering wheel.
Defective Symptoms 2
Scored discs can lead to poor braking and stopping distances.
Number of Stud Holes
5
Brake Disc Diameter [mm]
293.8
Brake Disc Spigot Diameter [mm]
75
Brake Disc Height [mm]
74.7
Brake Disc Th. Min [mm]
17.9
Brake Disc Th. Max [mm]
17.9
Brake Disc Net Weight [KG]
6.335
OE Number 1
34-21-6-794-30
OE Number 2
34 21 6 794 30
OE Number 3
3421679430
Cross Reference 1
DR7052
Cross Reference 2
DR 7052
Part AKA
Brake Rotor
Comments (0)
Grade
No customer reviews for the moment.
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