1999 BMW 540iT Front Brake Rotors

Carquest Premium rotors meet or exceed original equipment specifications while delivering superior stopping power. Carquest Premium rotors are manufactured with proper harmonic design and non-directional finish that eliminate noise and enhance pedal feel. Our rotors are designed to effectively dissipate heat, helping to eliminate brake fade and increase the life of your pads and rotors. Carquest Premium rotors are designed for long-lasting and quiet braking with superior performance.

Product Features:

• Meets or exceeds OE design for superior stopping power
• Exceeds ISO manufacturing guidelines (International Organization for Standardization)
• Matches OE vane size for proper cooling
• Optimal metallurgy and casting thickness to preventing warping
• Air gap eliminates brake fade and increases pad life
• Non-directional finish decreases break-in time.

Since 2008 Zimmermann is offering almost 400 Standard and almost 400 Sports Brake Discs in a coated version named Coat Z. The Zimmermann Coat-Z brake disc provides a protective coating that prevents rust and corrosion, extended rotor life and improved visual appearance. To improve the rust protection during storage and usage, Otto Zimmermann GmbH implements this new Coat-Z technology step by step in its production range. Beside the still optimum function of the brake disc, this coating ensures a consistent attractive appearance. Zimmermann brake discs are usually made of cast iron (with flake graphite) of different qualities; they correspond to the material used for the original spare parts. Therefore, the utilization of such materials (referred to as High Carbon by the competition) has always been a matter of course for Otto Zimmermann.

Product Features:

• Coat-Z protective anti-corrosion coating
• No formation of rust at the hub and herewith improved visual appearance
• Immediate functional capability without removal of the coating before mounting
• Excellent deceleration action and no distortion of friction ring at high temperatures
• Substantial weight saving and therefore less unsprung mass
• Floating mounting enables radial expansion of the brake disc under relatively heavy loads, thus preventing shielding and increasing resistance to heat cracks
• Hot spots prevented by optimized design of ventilation channels
• 1:1 exchange of original disc possible
• Not subject to registration: general ABE certification supplied with disc
• No conversion required for brake tuning

Power Stop drilled and slotted rotors provide a bolt-on upgrade for improved brake cooling and performance. Precision cross-drilled for maximum cooling and maximum performance during extreme conditions; rounded slots sweep away gasses, dust, and moisture to keep a clean friction contact patch on the rotor surface. Silver zinc dichromate plating resists rust and corrosion. With a direct OE fit, there are no special modifications needed.

Product Features:

• Bolt-on upgrade for stock brakes, no modifications necessary
• Precision cross-drilled for maximum cooling and optimum performance
• Slotted friction surface sweeps away gasses, dust, and water
• Chamfered drill holes and rounded slots to minimize stress cracking
• Zinc plated for protection against corrosion
• Manufactured to strict tolerances for DTV and runout for smooth quiet performance
• Weight and vane count match original equipment design
• 100% dynamic mill balanced
• Sold as a pair

Bosch rotors utilize innovative materials that ensure the very highest quality – and prevent brake judder, noise, vibration and harshness. Bosch QuietCast Premium Disc Brake Rotors utilize vehicle specific castings. The heat flow casting process produces superior G3000, GG20, GG15 and HC (high carbon) casting. Bosch castings provide strength and durability not found in competitive product. While competitors may provide a low cost product which helps save money, their castings can crack and provide poor durability. Bosch QuietCast provides consistent, safe and long lasting performance. Alutherm 80 Coating – Bi-metal aluminum and zinc clean-look coating/Alutherm 80 extends the life of the rotor and provides a clean look for today’s open wheels

Product Features:

• OE-Equivalent and a direct fit replacement
• Prevent rust and corrosion with clear-look coating protection
• Provide a clean look for today’s open-wheeled vehicles
• Are 100% balanced for smooth operation
• Factory-engraved edge code and minimum thickness specifications Bosch QuietCast Brake Rotors Brochure

The Brembo brand has a range of over 1,600 items, which covers a remarkable 98% of all passenger cars and commercial vehicles on the roads in Europe today. Brembo manufactures an OE-Quality Brake Disc that assures maximum performance and enhanced driving comfort and offers with its aftermarket rotors the same levels of quality, technology and performance that are found in many of the prestigious OEM fitments. Brembo UV Coating Technology : Environmentally friendly, solvent free UV coating offers superior protection of the disc, including braking plate surfaces. Includes new intelligent marking location for immediate control of the minimum thickness. High Carbon Discs: With their optimized thermal inertia, Brembo High Carbon discs reduce both vibration and noise. These products are the result of Brembo technology and a meticulously controlled production process in the brands foundries, which makes it possible to precisely vary the chemical composition of the cast iron, increasing the percentage of carbon in High Carbon discs. PVT pillar venting technology: ( Vented Rotors Only ) Brembo PVT discs feature the exclusive pillar venting system patented by Brembo, which improves cooling capacity and increases resistance to thermal cracking by over 40%. Fixing screw kits: discs are supplied with all the necessary fixing hardware for simpler, more efficient and safer installation

Product Features:

• Metallic finish that maintains a clean and bright appearance over the entire life span of the disc
• Protective coating on braking plate surfaces, external diameter and disc hub to ensure complete protection
• New location for minimum thickness control with greater ease of reading for service professionals
• Water-based paint free of chemical solvents – Energy efficient UV coating process
• Superior to products currently on the market proven by resistance to: Salt spray testing, Humidity and High temperatures BREMBO UV COATED DISCS BROCHURE

WBR Run True Technology Metallurgic-Gray (MG) Finished Rotors All World Brake Resources (WBR) brake rotors with Run-True technology are manufactured to match the exact OE fit, OE construction, and precision finishing to ensure quick and easy installation, as well as trouble-free functionality for the life of the rotor. The Metallurgic-Gray coating is applied to all outward non-friction surfaces including in the gap between the plates covering the cooling vanes and cured through an oven drying process. The Gray coating provides an effective anti-rust protection to help maintain a clean appearance. The coating used for WBR is also similar to the OE color used by many OE car makes. WBR Brake Rotors with Run-True Technology have ultra tight tolerances that provide the finest braking experience, from break in throughout the life of the rotor, reducing the chance of warping even under extreme braking temperatures. The coated brake disc provides a protective water based coating that prevents rust and corrosion, extended rotor life and improved visual appearance. WBR Brake Rotors are manufactured to meet or exceed the original equipment manufacturer specification for durability, fit, and function.

Product Features:

• High metallurgical and machining standard to improve stopping distances
• Produced to match OE design fitment – G 3000 gray iron
• Mill balanced
• TS16949 certified
• Non-directional finish provides smooth vibration free performance
• No need for machining prior to installation
• Durable Metallurgic-Gray finish to all outward non-friction surfaces
• Metallurgic-Gray anti-rust protection to help maintain a clean appearance
• Compatible with NAO, Ceramic and Semi-Met pad compounds for reduced noise
• Designed to minimize brake fade and extend pad and rotor life
• 24/24 Warranty – limited warranty against defects in material and workmanship Technical Service Bulletins