Don't know if you figures it out or not. Just got news I needed new tires on my 2005 Touring. Only 30K on this set. Pax replacments were priced for me @ $ 1200 for just 4 tires. Yeah right. So through some digging you can find ten spoke LX wheels and new tires (Goodyear Assurance triple tread) and you are out-the-door for just over $800 with entirely new wheels.
Even trying to get Michelin PAX from a tire store, you only save a few $. I am in the Chitown area and even her you have no choice because of the wheels and the run-flat feature.
Good luck.