I went through several pairs* of the now-discontinued progenitor of the Advan AD09, the S.drive, on my heavily modified smart fortwo 450 cabrio. In a 195/40-16 size, combined with a 22-45 mm drop on the Bilstein B14 suspension, the ponderous, comically-under-powered smart cabrio became a go-kart, a tactical weapon on twisty roads. I have yet to drive a stickier street tire. I could see myself getting the AD09 at some point, but probably after the warranty period ends, when I might get the KW cool-over setup.
*I mounted these to a set of identical-width Michalak/Brabus wheels with significant offset stagger, so the rears wore twice as quickly as the fronts. The DSC on the smart wasn't in love with the setup, and needed a hair less diameter on the rears, so the fronts became rears after two summers (~16,000 km) and the fresh pair went on the front axle.