Zimmermann 150.2935.20 Disc Brake Rotor - Front

Overview of Zimmermann Disc Brake Rotor 150.2935.20

The Zimmermann disc brake rotor 150.2935.20 is engineered for precision braking performance on select BMW models. Designed with a slotted and perforated surface, this rotor enhances heat dissipation and braking consistency for vehicles like the BMW 120i and 330i.

• Compatible with BMW 120i, 125i, 128i, 135i, 135is, 323i, 325i, 328i, and 330i models
• High-carbon machining for improved durability and wear resistance
• Slotted and perforated brake disc type for optimized cooling and debris removal
• Coated surface to reduce corrosion and extend rotor life
• Outer diameter of 338 mm with a thickness of 26 mm and minimum thickness of 24.4 mm
• Hub bore diameter of 79 mm and bolt hole circle of 120 mm with 6/5 hole arrangement
• Weight of 10.8 kg ensuring robust construction

Technical Details and Design Features

This Zimmermann disc brake rotor (part number 150.2935.20) features a high-carbon machining process that enhances the rotor's resistance to thermal stress and wear. The slotted and perforated design improves brake pad contact and helps dissipate heat more effectively, reducing the risk of brake fade during demanding driving conditions. The coated surface protects against rust and corrosion, which is particularly beneficial for vehicles exposed to wet or salty environments. With an outer diameter of 338 mm and a thickness of 26 mm, this rotor meets the specifications required for optimal braking performance on various BMW models including the 135is and 325i.

Compatible BMW Models and Applications

This disc brake rotor is specifically compatible with a range of BMW vehicles, including the 120i, 125i, 128i, 135i, 135is, 323i, 325i, 328i, and 330i. It is designed to fit vehicles requiring a bolt hole circle of 120 mm and a hub bore diameter of 79 mm. The 6/5 hole arrangement ensures proper mounting and alignment for these models, making it a suitable replacement part for maintaining factory braking standards.

Common Issues Addressed by This Rotor

• Brake fade caused by overheating during extended braking
• Uneven brake pad wear due to rotor surface imperfections
• Corrosion and rust buildup on brake rotors
• Reduced braking efficiency from warped or damaged rotors
• Noise and vibration issues related to rotor surface condition

Installation Notes and Tips

When installing the Zimmermann disc brake rotor 150.2935.20, ensure the rotor surface is clean and free of any protective coatings or oils before mounting. Verify the bolt hole circle and hub bore dimensions match the vehicle specifications. It is recommended to replace brake pads simultaneously to ensure even wear and optimal braking performance. Proper torque settings should be applied to the mounting bolts to avoid rotor warping. After installation, perform a brake bed-in procedure to maximize rotor and pad contact.

Quality Assurance and Warranty

Zimmermann rotors are manufactured to meet strict quality standards, including compliance with ABE No. Kba 61385 certification. The high-carbon machining and coated surface contribute to the rotor's durability and consistent performance. While specific warranty details may vary, Zimmermann products typically come with manufacturer-backed guarantees against defects in materials and workmanship, providing confidence in the rotor's reliability for BMW brake system maintenance.