Zimmermann 150.2940.70 Disc Brake Rotor - Front Left

Zimmermann Formula Z Front Brake Rotor

The Zimmermann Formula Z disc brake rotor is built for high-load braking on performance applications, with a two-piece construction, floating mounting, and a coated surface for improved corrosion resistance. This Zimmermann 150.2940.70 rotor is a direct-fit front left option for select BMW M2, BMW M3, and BMW M4 models with 380x30 mm ventilated brake setups.

Key Features

• Part number: 150.2940.70
• Two-piece brake disc with Alu hub floating quality
• High-carbon machining for thermal stability
• Coated surface with anti-corrosion finish
• 380 mm outer diameter, 30 mm thickness
• Minimum thickness: 28.4 mm
• Hub bore: 79 mm
• Bolt hole circle: 120 mm
• Height: 62.4 mm
• Weight: 11.20 kg

Detailed Description

Zimmermann 150.2940.70 is engineered for vehicles that see elevated mechanical and thermal stress, including tuned BMW M applications and chassis setups with increased braking demand. The floating two-piece design allows radial expansion under heavy load, helping reduce heat-related cracking and maintaining consistent braking performance. The coated finish also supports a cleaner appearance and added resistance to corrosion. This part cross-references OE-style numbers such as 3411 2 284 809 and 18694 for the same application.

What It Helps Address

• Brake fade during repeated high-speed stops
• Heat buildup in aggressive street or track use
• Rotor cracking from thermal expansion stress
• Corrosion on exposed brake rotor surfaces
• Fitment issues on 380x30 mm front brake setups

Installation Notes

Compatible With select BMW front-left applications only. Fits 2020 BMW M2, front left; 2020 BMW M4, front left; 2019-2020 BMW M4, front left; 2019 BMW M2, front left; 2016-2018 BMW M2, front left; 2018 BMW M2, front left; 2015-2018 BMW M3, front left; 2018 BMW M3, front left; 2015-2018 BMW M4, front left; 2018 BMW M4, front left; 2016-2017 BMW M2, front left; 2016-2017 BMW M3, front left; 2016-2017 BMW M4, front left; 2015 BMW M3, front left; 2015 BMW M4, front left. Verify 380x30 mm ventilated brake configuration and note exclusions for vehicles with M Carbon ceramic brakes [S2NKA] or M-performance brakes where listed.

Quality Assurance

Zimmermann supplies this rotor with general ABE certification or ECE documentation, and the coated finish is designed to support long-term surface protection. The Formula Z construction is focused on stable braking performance under demanding use, making the Zimmermann 150.2940.70 a technical replacement choice for BMW M2, BMW M3, and BMW M4 front brake service.