I bought this car in October 2007 with 2 miles on it. I have had it to the shop 1 time for a stero fuse that went back and was replaced under the warrant. I replaced the run flat tires with regular tires ($70 dollar Pirelli's from Discount Tire) and it made no change in it's performance, "repeat, no change in performance after i had run the original tires on Nitrogen for 39000 miles. Nitrogen makes the difference in tires, trust me. The car now has 53000 miles and it still runs great. The only notable annoyance it that the timing clicks and has clicked since about 8000 miles but it is of no harm to the engine. I get the oil changed once a year for about $80, not at the dealership. Great car.
Take the run flat tires off and put regular tires on all vehicles. These tires are to expensive.