I have put winter tire on my C230 2002 Kompressor Coupe.
The tires are staggered in size. Since putting these winter tires on a pretty bad vibration has started. (Studded in the back, not studded in the front)
Mechanics have balanced them three times now. Problem keeps coming back.

I'm wondering ... Does the computer need to be told that the front and rear tire sizes are different.
How would the traction control react to tires in the front rotating faster than tires in the back... does this 'confuse' the computer?