Premature wear in various multi-link suspension components can cause noises that are difficult to diagnose. Worn suspension parts can also cause uneven tire wear and create steering alignment problems.Google+
Car Problem Reports
Volkswagen Passat W8 Premature Wear in Multi-Link Suspension Components May Cause Noise
Volkswagen Passat W8 Problem
Visitor, 2003 Volkswagen Passat W8, 130,000 mi
I have a high speed vibration at speeds over 65-70 mph? I've had 4 wheel alignments twice in the last few months. Took it to the shop and they said the tires were cupped?! The vibration is a little better, but its still noticable. Could this be a suspension problem?