BMW E60 vibration while driving: propshaft or something else
E60 vibrates while driving, how do I narrow down the cause?
Vibration that occurs when braking points to the brake discs or the track rod ends. Vibration that changes with speed points to the propshaft, wheels or tyres. Vibration that changes with engine revs points to the flywheel or damper.
Which propshaft faults cause vibration?
The vibration is usually caused by a loose or sticking universal joint, a worn centre joint or a bad rubber flex disc. After the parts have been replaced, the propshaft must be balanced. When dismantling, the propshaft is reassembled in the same position as before, otherwise the balancing goes wrong.
What other than the propshaft can cause the same vibration?
The most common cause of vibration above 80 km/h is the tyres or wheels: vertical runout or a poor fit on the hub. Play in the wheel bearing can also cause vibration. At the rear, worn axle and control arm bushings cause wandering and vibration.