ATE SP25138 Disc Brake Rotor - Front

ATE Coated Front Brake Rotor for BMW

The ATE Coated Single Pack Rotor SP25138 is a vented front disc brake rotor built with a full cast construction and a rust-resistant coating. It is engineered to meet or exceed OEM specifications for North American disc brake rotor applications, making it a direct-fit choice for select BMW models.

ATE, a brand of Continental Automotive Systems, applies OE-level product and process engineering to its aftermarket brake line. The ATE Coated Single Pack Rotor line focuses on coated brake discs with first-quality materials and consistent manufacturing standards for dependable braking performance and corrosion protection.

Key Features

• Part number SP25138
• Vented front disc brake rotor
• Full cast metal construction
• Rust-resistant coated surface
• Non-directional disc finish
• Outside diameter: 325.00 mm
• Nominal thickness: 24.90 mm
• Bolt hole diameter: 5
• Height: 2.433 in

Detailed Description

This ATE brake rotor is built for front axle applications on select BMW vehicles, including the 2001-2005 BMW 330i front, 2001-2005 BMW 330xi front, 2001-2006 BMW 330Ci front, and 2006-2008 BMW Z4 front. If you are searching for a front brake rotor for BMW 330i, BMW 330xi, BMW 330Ci, or BMW Z4 applications, SP25138 provides an OE-style replacement with coated protection to help reduce surface rust during storage and service.

The coated finish is intended to preserve the rotor surface before installation and during normal exposure, while the vented design supports heat management in front brake use. This part cross-references Bosch 15010122 for the same application.

What It Helps Address

• Brake pulsation caused by worn or uneven rotor surfaces
• Visible rotor rust on coated front brake components
• Reduced braking consistency from rotor wear
• Noise related to rotor surface irregularity
• Need for an OE-spec front rotor replacement on BMW 330i, 330xi, 330Ci, or Z4 models

Installation Notes and Tips

Verify rotor dimensions, hub fitment, and brake system compatibility before installation. Clean the hub mounting surface thoroughly to help prevent runout concerns, and inspect pads, calipers, and hardware condition at the same time. For best results, follow the vehicle manufacturer’s service procedures for bedding-in new brake rotors and pads.

Quality Assurance

ATE brake parts are backed by Continental Automotive Systems’ OE brake engineering experience and are manufactured to a higher standard than conventional replacement parts. The coated rotor design reflects ATE’s focus on premium materials and consistent aftermarket quality.