Just ordered Continental Contisports for back tires today ($300 less than PS2s). Here is my rational: Since the rear tires only last 12K (for me), why pay 300-400 dollars extra for rear tires? The front tires will last at least another 6 months before I also change to Contisports. I've enjoyed the original PS2s so far, but replacing the rear tires every 12k miles is a pain.