I tend to agree with SANguru on this one mainly because i believe this kind of technology has not arrived at the "i can afford it point" Perhaps the concept is a good one on the surface but the trade offs at this point don't seem to be worth the guinea pig sacrifice the tire makers have in mind for us. Hence the 2005 530i has reg tires.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….