Yes they're RFT. Actually, the correct generic term is SST - Self-Supporting Tire. Michelin has 2 versions of the Pilot Sport: PS2 and PS2 ZP, and as I mentioned, ZP stands for Zero Pressure. I'll add to my post:
1. 225/40/ZR18 88Y - Michelin PS2 ZP, RM1,100
2. 255/35/ZR18 88Y - Michelin PS2 ZP, RM1,400
Made in France, April 2010
Tire manufacturers use various names for their SSTs. From Tirerack.com: Bridgestone RFT (Run Flat Tire), Dunlop DSST (Dunlop Self-Supporting Technology) and ROF (Run On Flat), Firestone RFT (Run Flat Tire), Goodyear EMT (Extended Mobility Technology) and ROF (Run On Flat), Kumho XRP, Michelin ZP (Zero Pressure), Pirelli RFT (Run Flat Technology) and Yokohama ZPS (Zero Pressure System).
3rd gen because this is the 3rd gen of SSTs, discounting the now defunct Michelin PAX system. Like you, I don't like the thought of having a flat without a spare in the boot, and from my own experience, they're safer in a total air loss situation while rolling on a highway.