2001-2005 E46 325i / 325xi 4-Door Sedan & Wagon, 2001-2006 E46 325Ci Coupe & Convertible, 1999-2000 E46 328i 4-Door Sedan, 2000 E46 328Ci Coupe & ConvertibleThis is one Left Rear slotted brake rotor. Always replace your rotors in pairs. Be sure to also purchase the matching side.
Excessive heat can cause resins in your brake pads to vaporize or "outgas." As the brake pads wear, the used friction material turns into a fine dust. This boundary layer of heat, gas, and dust builds up between the pad and rotor surfaces and inhibits performance.
The slots in StopTech Sport Slotted Brake Rotors are machined into the rotor and help evacuate gasses and dust, shed heat, and keep the brake pad surface clean. And in wet, raining conditions, the Vac-U-Slot helps push water off the braking surface for better stopping power. StopTech also uses a special metallurgy and directional cooling vanes to improve high temperature performance.
The slots also serve as a visual wear indicator. Slots are machined to the rotor's minimum thickness where it crosses the outside edge. If you cannot see the slots along the outside edge, the rotor has worn down to its discard depth. StopTech Sport rotor hats, edges, and internal vanes are finished in a durable black e-coat to prevent corrosion. The braking surfaces are left in a bare iron finish to improve the bed-in process of brake pads.
- Machined slots evacuate gasses, dust, and water
- Key features help improve high temperature performance
- Slots serve as easy visual wear indicators
- Hats, edges, and cooling vanes finished in corrosion-preventing black e-coat
this is the larger 294mm (11.6") disc used on 323iT Wagon or 323i Convertible models only. It will not replace the smaller disc on 323i sedan or coupe.
BMW Fitments: 3 Series
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 328Ci
E46 (99-05) > 328i