ATE 424251 Disc Brake Rotor - Rear

Overview of ATE Original Rotor 424251 for BMW Models

The ATE Original Rotor 424251 is engineered for precise braking performance on select BMW vehicles. Designed as a vented disc brake rotor, it offers reliable stopping power and durability for models such as the BMW 430i, 440i, 330i xDrive, and others.

• High-carbon material for enhanced wear resistance
• Vented full cast construction for improved heat dissipation
• Non-directional, smooth disc finish to reduce noise and vibration
• Rust resistant coating to extend rotor life
• Compatible with 5-bolt wheel patterns
• Nominal thickness of 24.00 mm with discard thickness at 22.40 mm
• Outside diameter of 345.00 mm and inside diameter of 185.00 mm
• Height of 66.20 mm, designed for specific BMW brake assemblies

Details on ATE Original Rotor Product Line

The ATE Original Rotor line focuses on delivering rotors that meet or exceed OEM specifications. This product line emphasizes material quality and precise manufacturing tolerances to ensure consistent braking performance. The 424251 rotor exemplifies these standards with its high-carbon composition and vented design, tailored for BMW vehicles requiring reliable heat management and structural integrity.

Technical Description and Features

The ATE Original Rotor 424251 is constructed from high-carbon material, which improves wear resistance and thermal stability during braking. Its vented, full cast design facilitates efficient heat dissipation, reducing the risk of brake fade under demanding conditions. The rotor features a non-directional, smooth surface finish that helps minimize noise and vibration. Additionally, a rust resistant coating protects the rotor from corrosion, extending its service life. This rotor is designed with a 5-bolt hole pattern and specific dimensions (345 mm outside diameter, 185 mm inside diameter, and 66.20 mm height) to ensure proper fitment on compatible BMW models.

Compatible BMW Models and Applications

• BMW 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe
• BMW 440i, 440i Gran Coupe, 440i xDrive, 440i xDrive Gran Coupe
• BMW 330i, 330i xDrive, 340i, 340i xDrive
• BMW 328i, 328i xDrive, 328i GT xDrive
• BMW 428i, 428i Gran Coupe, 428i xDrive, 428i xDrive Gran Coupe
• BMW 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe
• BMW 335i, 335i GT xDrive, 335i xDrive, ActiveHybrid 3, 328d xDrive

Common Issues Addressed by ATE Original Rotor 424251

• Brake rotor warping due to heat buildup
• Premature rotor wear and scoring
• Corrosion and rust on rotor surfaces
• Brake noise and vibration during stopping
• Inconsistent braking performance on vented rotors

Installation Notes and Tips

When installing the ATE Original Rotor 424251, ensure the rotor surface is clean and free of contaminants before mounting. Verify the rotor thickness is above the discard thickness of 22.40 mm to maintain safety standards. Use proper torque specifications for the 5-bolt pattern to avoid rotor distortion. This rotor does not include bearings or an ABS tone ring, so confirm compatibility with your vehicle’s brake system components. It is recommended to replace brake pads simultaneously to optimize braking performance.

Quality Assurance and Warranty

ATE Original Rotors are manufactured to meet stringent quality standards, ensuring consistent performance and durability. The high-carbon material and rust resistant coating contribute to extended rotor life. While specific warranty details for part number 424251 should be confirmed with the supplier, ATE products typically come with manufacturer-backed warranties covering defects in materials and workmanship.