doh my mistake.... went to the michelin site and looked up the PS2s and thought the /RF designation meant run-flat, apparantly its the european designation for /XL. http://www.michelinman.com/assets/pd...otsportps2.pdf

However, they do seem to make the Pilots, in run-flat (zero pressure) for the front wheels. Unless the ZP stands for something else..... in which case I can't find a single michelin that is Zero-Pressure like they say they have.

http://www.michelinman.com/assets/pd...pilotsport.pdf

I will admit I just looked for the basic 225/40zr18 and not any other tire specs, so don't know if other things don't quite match up.