DEFINITION: The roughness or vibration occurs while driving the vehicle at various speeds.

A bent or dented propeller shaft

Replace the propeller shaft.

Under coating is on the propeller shaft

Clean the propeller shaft.

The universal joints are worn

Replace the propeller shaft assembly because universal joint is not serviceable.

The driveline vibration is at 80 km/h (50 mph)

Inspect propeller shaft for runout.