Front Rotors

Fig 1: Front Brake Rotor Comparison

Courtesy of DAIMLERCHRYSLER CORP.

1 - BRB/BRT BRAKE ROTOR

2 - STANDARD ROTOR THICKNESS
22.91-23.10 MM

3 - PERFORMANCE ROTOR THICKNESS
27.91-28.10 MM

4 - BR4 PERFORMANCE BRAKE ROTOR

5 - IDENTIFYING MACHINED AREA

There are two different size vented front brake rotors available depending on brake application. Vehicles with the brake sales code BRB and BRK (Disc/Drum combinations) and BRT (Disc/Disc combination) use standard size front brake rotors (1). Vehicles equipped with the brake sales code BR4 (Performance Disc/Disc combination) use heavier brake rotors (4). Although the same diameter, the BR4 front brake rotor is approximately 5 mm thicker at the pad contact area (3) than the standard front brake rotor (2). The BR4 brake rotors can be easily identified by the recessed machined area (5) near the hub center.