 Like most other BMW owners that bought their vehicles with RFTs, I too had a less than positive experience.  It was a rougher ride than my '02 M3 after 15k miles.  I'm ready for my first tire replacements at 30K miles and fortunately took it in for service before buying new tires.  Complained about them to the service guy and he finally agreed they weren't getting rave reviews and said, under his breath, that people switching to regular tires noticed a marked improvement in handling, noise and comfort.  He also said BMW now sells a "Mobility" kit for non-RFT tires (comes standard with new M's apparently)  that is basically a fancy tire repair in a can.  Ordering new Michelin's today!