Very good comments. Like most motorheads, I just assumed that the lower profile and more grip tire the better. The closest that I come to a track is the highway commute. I have a 99 C230 Kompressor and upgraded to 16 inch rims with a wider track at the rear. They run on Pirelli P7000. These tires are excellent in the rain. However, on the highway they wander a lot. In fact, it can tiring on a long trip as it requires a lot of concentration to keep the car in a straight-line. In fact, this is so bad that I am going to have MB check the alighment and tire balance even though the car is relatively new.

Given what I have learned from these comments, I will seriously reconsider upgrading to a lower profile tire on my next MB. I think the comments about MB's steering and suspension on lower profile tires are correct. I did not experience this wansdering problem on other automobiles. I had a 98 Volvo S70 with lower profile tire and did not experience such steering problems.