16 inch tires come standard on the
MCS. They provide a more forgiving ride than the 17 inch options. To be honest, the 16" runflats bother me locally at times on city roads, but long distances, especially on interstates, I have no complaints at all. You can eventually modify the ride by going to non-runflats or 15s if you're still disatisfied. However, I feel that this would mainly be an issue if you're driving potholed or poorly paved roads.
-Michael
'04 DS/W