Today, even though the tires that came on this car that I purchased a month ago only have 7,300 miles on them, I ordered a new set of Michelin Pilot Sport All Season Radials for my Crossfire. The original Continentals were manufactured 6 1/2 years ago and upon close inspection, I did find some small cracks in the rubber at the edges of the tread blocks. I'd rather be safe than sorry, especially without a spare.