Do any of you rotate your tires? I bought my 06 AWD 300 pre-owned with about 12k miles on it, never bothered to rotate them, and they were shot at 31k miles...the ride felt horrible in the end... I just replaced them with a brand new Dunlop runflat...the previous ones are discontinued...the new ones have a crazy tread pattern...they look cool. They are 225/50 R17. I plan on rotating them every 5k miles, and we'll see how they last. Car feels awesome again....The dealer wanted $350 a tire, and I got them for $266 each out of a shop that I buy several sets of tires from a year...