Michael, I feel that being able to design a tyre specifically for one car must have advantages in working with the known dynamics of that vehicle. Logistically if nothing else. That was always my understanding, and why I believe it will take a major effort to topple Ferrari as long as they have this relationship. I also feel that's the thinking behind the nine's costsaving measures. Ferrari are anything but naive and if they could find a performance leap by switching to Michelin, I very much doubt they would think twice about doing so. regardless of contractural committments. As Ian says, getting the best out of a tyre designed for another car is, I would imagine, very difficult. Let's remember that BAR's performance relative to the top Michelin teams did not dramatically change from the last few races of their Bridgestone era to last season. The slight increase in performance could easily be attributed to accelerated engine development and the new chassis/gearbox package. Likewise with Sauber. Their inherent speed towards the end of the 2004 season was there for all to see, indeed second row qualifying slots and top five performances were much in evidence as the season came to an end. I cannot for the life of me see the evidence to support Pierre's claims. The refusal of Ferrari to switch also makes me pretty sure his opinions are no more than wishful thinking.