San Marino preview quotes: Williams

"The track itself provides us with a unique challenge as it's somewhere we really have to use the curbs quite a lot. I've always enjoyed racing at Imola and, falling after a successful test at Barcelona last week when both Bridgestone and Williams made good progress with the tyres and car respectively, I'm looking forward to getting the car on the track."

Nico Rosberg: "I'm looking forward to my first Formula One race in Imola. Bridgestone have made some good progress on their compounds for cooler temperatures, as we saw in Melbourne. The team's test went well in Barcelona last week and I believe we made good progress, especially with the aero package. I know the Imola track from GP2 so that will be a help to me, definitely, so we will see how it goes."

Sam Michael, Technical Director: "Since the last race, the team has been testing at Vallelunga and Barcelona to improve the car's reliability and performance. We have identified the problem we had on Mark's gearbox in Melbourne and put corrections in place to avoid that type of failure again. Imola mainly consists of medium and high speed corners and chicanes.

"The curb riding requirements at San Marino tend to dominate the mechanical set-up of the car, but high speed stability is also important. We will have some aerodynamic and mechanical improvements on the FW28, all of which form part of our normal season-long development programme. Bridgestone have been working hard to improve tyre grip on low temperature surfaces and, as a result of this work, we will have two new tyre designs in Imola.

"Tyre wear is not an issue, however, particularly with such a short pitlane and the effect that has on fuel strategy for the race. The FW28 has proved its competitiveness in the first three races of 2006 and with greater reliability we should be able to run near the front of the grid."

Simon Corbyn, Head of F1 Race Engineering, Cosworth: "In order to ensure the best possible engine reliability in Imola, both drivers will start the event with fresh CA2006 Series two engines. As neither Mark nor Nico finished the previous race, they will not suffer a grid penalty as a result of this decision.

"Cosworth continue to work closely with Williams to carefully manage race engine usage and running conditions, while the usual challenge of delivering the best possible performance without compromising engine reliability remains."