Minor vibration on C240
I notice that when I just started my C240 from cold and drive it, the car makes minor vibration and only noticeable at the speed of 30 mph or lower. The vibration doesn't dissapear even if i put the manual gear in neutral and the car rolls by itself (engine is idling). I can say it doesn't seem to come from the engine. It feels like you are going through a rough surface. This doesn't happend after everything (engine, gearbox, differential etc etc) warms up. Anybody else experience this?
Thanks,



