OK here is one I havent seen discussed much..but then I am pretty new to this. My 98 C class has since new been what you might call "hypersensitive" to steering input at high speeds, like above 75 or so. The car came with Conti's, and when they wore out at about 33K, I installed Michelin MXV4 Plus Energy tires. The problem is that there is a very subtle wander in the lane (estimate about 1/2 to 2 inches) at 75 and up. I.E. you can hold the steering wheel steady doing 90 or so the car distinctly moves around. It is yet even more sensitive in a cross wind situation. Anyone has a recent C class that exhibits this behavior? Yes I had the alignment checked, but I did not ask exactly was the toe centered, or was it maybe in spec at the wrong end (maybe in spec but not enough toe-in). I wonder if this chassis demonstrates this as a normal behavior, due to oem toe/caster/camber and weight distribution.

Up to 65 or so the steering is rock solid....This phenomenon makes the car somewhat squirrely to drive, and makes you really focus your attention at high speeds. BTW...no difference with the Conti's or Michelins...same behavior. Also....tire pressure per the book.....and more pressure aggravates it. (i.e. running 34 psi makes it more sensitive yet)

I would hate to find out that this car has this characteristic in it's chassis...Anyone have a similar experience with this car? Yeah I am anal too.... (Larry )) but I have driven plenty of european sedans that don't move around at all at 90 plus.....(BMW...Volvo) I am convinced this is a real phenomenon. My wife has noticed this as well.....

Any ideas or similar experiences?

TIA , dave