Dynamic Friction 900-31112 Disc Brake Rotor - Front

Front Brake Rotor for BMW 340i, 435i, 440i

The Dynamic Friction DFC Hi-Carbon Alloy GEOMET Coated Rotor, part number 900-31112, is a front vented disc brake rotor built for select BMW performance sedans and coupes. It combines a high-carbon alloy rotor design with a GEOMET-coated finish to support consistent braking performance and corrosion resistance in everyday driving.

Key Features

• Front vented disc brake rotor for select BMW applications
• Hi-carbon alloy construction for stable braking characteristics
• GEOMET-coated surface helps protect exposed areas from corrosion
• Outside diameter: 370 mm
• Nominal thickness: 30 mm
• Discard thickness: 28.4 mm
• Height: 73.3 mm
• 5-bolt pattern with 16.5 mm bolt hole diameter
• Inside diameter: 79 mm

Product Details

The DFC Hi-Carbon Alloy GEOMET Coated Rotor line is focused on OE-style replacement fitment with material and coating choices that support long-term serviceability. This rotor is a vented front brake rotor for BMW 335i, BMW 340i, BMW 435i, BMW 440i, and ActiveHybrid 3 models listed below, with application-specific notes for standard disc and full cast standard rotor setups. Part number 900-31112 is a direct-fit option for drivers replacing worn front rotors on BMW 340i and BMW 435i platforms, as well as later BMW 440i models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Brake pulsation from rotor wear or thickness variation
• Reduced braking consistency from overheated or worn front rotors
• Surface corrosion on exposed rotor areas
• Noise caused by uneven rotor condition
• Service replacement for front brake rotor wear on BMW 3 Series and 4 Series models

Fitment

• Fits 2017-2020 BMW 440i, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2017-2020 BMW 440i Gran Coupe, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2017-2020 BMW 440i xDrive, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2017-2020 BMW 440i xDrive Gran Coupe, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2016-2018 BMW 340i, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2018 BMW 340i xDrive, front. Full Cast Standard Rotors; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2016-2017 BMW 340i xDrive, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2014-2016 BMW 435i, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2015-2016 BMW 435i Gran Coupe, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2014-2016 BMW 435i xDrive, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2015-2016 BMW 435i xDrive Gran Coupe, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2014-2015 BMW 335i, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2013-2015 BMW 335i xDrive, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor
• Fits 2013-2015 BMW ActiveHybrid 3, front. Standard Disc; DFC Hi-Carbon Alloy GEOMET Coated Rotor

Installation Notes

Verify rotor dimensions, hub fitment, and brake package details before installation. This rotor is specified for front applications only and should be matched to the vehicle’s brake configuration, including standard disc or full cast standard rotor notes where listed. Clean the hub mounting surface thoroughly and inspect pads, calipers, and hardware condition before completing the brake service.

Quality Assurance

Dynamic Friction’s DFC Hi-Carbon Alloy GEOMET Coated Rotor line uses a coated finish and high-carbon alloy construction to support dependable service life in brake replacement applications. Part number 900-31112 is built for the listed BMW fitments and follows the dimensional specifications required for proper front rotor replacement.