1991 BMW 735i Front Brake Rotors

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

Carquest Wearever rotors meet or exceed original equipment specifications while delivering superior stopping power. Carquest Wearever 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 Wearever 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 prevent warping
• Air gap eliminates brake fade and increases pad life
• Non-Directional finish decreases break-in time

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