TRW DF4802 Brake Disc

TRW DF4802 Brake Disc

The TRW DF4802 Brake Disc is a high‑performance, ventilated disc designed specifically for BMW models such as the 3 Series (E90/E91/E92/E93), X1 (E84), and various other series including the 1 Series (E81/E87). It delivers superior stopping power, heat dissipation, and durability under demanding driving conditions.

Key Features

• Ventilated Design: Dual‑channel ventilation channels reduce heat buildup, maintaining consistent braking performance during prolonged use.
• High Carbon Content: The disc’s composition includes a high percentage of carbon fibers, enhancing strength while keeping weight low.
• Precision Machining: Each disc is machined to exact tolerances, ensuring perfect fit and alignment with the brake caliper.
• Corrosion‑Resistant Finish: A protective coating resists rust and corrosion, extending service life even in harsh climates.

Technical Specifications

Performance Benefits

The combination of a lightweight carbon matrix and advanced ventilation results in:

• Reduced Brake Fade: Even during aggressive driving or heavy braking, the disc maintains consistent pressure.
• Improved Heat Management: Rapid heat dissipation prevents glazing of brake pads, preserving friction characteristics.
• Longer Service Life: The robust material resists wear and deformation, extending replacement intervals.

Installation Guide

1. Remove the Old Disc: Loosen the caliper bolts, lift the caliper, and slide out the existing disc. Keep the brake pads in place for reference.
2. Clean the Hub: Use a brake cleaner to remove grease or debris from the wheel hub surface.
3. Position the New Disc: Align the mounting holes with the hub and press the disc into place, ensuring no gaps.
4. Tighten Bolts: Secure the four bolts in a crisscross pattern to evenly distribute pressure. Torque to manufacturer specifications (typically 80–100 Nm).
5. Reinstall Caliper: Slide the caliper back over the new disc and reattach the bolts.
6. Check Alignment: Spin the wheel manually; it should rotate freely without wobble or binding.

Maintenance Tips

• Inspect discs every 10,000 km for signs of cracking or excessive wear.
• Replace brake pads when pad thickness falls below 4 mm to avoid metal‑to‑metal contact.
• Avoid driving on gravel or debris that can embed particles between the disc and pad.
• Use a high‑temperature brake fluid compatible with BMW specifications (e.g., DOT 4).

Compatibility Overview

The TRW DF4802 is engineered for a range of BMW models. Below is a concise compatibility matrix:

Why Choose TRW DF4802?

TRW’s reputation for engineering excellence is reflected in the DF4802’s:

• Precision Manufacturing: Each disc undergoes rigorous quality checks to meet OEM standards.
• Consistent Performance: Tested under extreme conditions, ensuring reliability across diverse driving environments.
• Brand Trust: TRW is a recognized name in automotive safety components worldwide.

Conclusion

The TRW DF4802 Brake Disc offers a blend of advanced materials, meticulous design, and proven performance. Whether you’re restoring an older BMW or upgrading a newer model, this disc delivers the stopping power and durability that discerning drivers demand.