Irregular and premature tire wear can be caused by the front thrust link bushings cracking and causing excessive movement in the suspension. The thrust link bushings are fluid-filled (to help reduce vibration), so if they crack, they will leak oil.Google+
Car Problem Reports
Mercedes-Benz C320 Tire Wear Caused By Worn Front Thrust Link Bushings
Mercedes-Benz C320 Problem
Average Mileage: 121,285 mi (74,000 mi - 170,000 mi)
purchased car with 84000 and by 85500 I had wear on both inside and out. No vibration or other strange issues.
Visitor, 2003 Mercedes-Benz C320, 74,000 mi
I think I have the same problem as the car shimmies and front end vibrates when the car goes around a gentle curve to the right. the steering wheel shakes also. This started happening fairly suddenly and is getting pretty bad. Almost feels like the left front wheel is ready to fall of, but I checked and all is tight.
The same shaking happens when I apply the brakes only at a certain speed and a certain pressure. If I push a little harder the wheel shake stops.
Visitor, 2002 Mercedes-Benz C320, 150,000 mi
Thrust arm bushings control arm bushijgs swaybar endlinks struts and shocks
Visitor, 2004 Mercedes-Benz C320, 115,000 mi
On slight turns the wheel will vibrate depending on the side of the bad ball joints or bushings. The vibration will get worse if the thrust arms or control arms are not replaced.