After 5 years and 20,000 miles or so of solid service, and surviving several MOT advisories for cracked walls, I finally gave up on my Michelins. I really wanted to keep the 155 tyre width, so the only option that I could find was Nankang via Black Circles. I was dubious previously, but there is a long running article in Viva Lancia about a track racing Integrale. The preferred racing tyre option? Nankang.