BMW 99-06 Flywheel

Most service professionals consider the dual (twin) mass flywheel to be a wear item, and recommend replacing it as part of each clutch job. Resurfacing of dual mass flywheels, common with conventional flywheels, is impractical and not recommended by many OEM's, including BMW and Porsche. In fact, reusing an old dual mass flywheel with a new clutch friction disc often results in unwanted noise, vibration, and harshness, due to torsion spring wear.