Canada preview quotes: Sauber

Sergio Perez: "It will be my first Canadian Grand Prix, as last year I only did a few laps in the first free practice before I realised I did not feel well enough to drive. I felt very dizzy in the car which was a consequence of last year's Monaco accident. I think at times in recent races we have been very unlucky, but the pace is there as my lap times during the Monaco race clearly proved. I'm looking forward to doing a good job in Canada and scoring as many points as possible. It is a fast and fluid circuit on which you are often close to the wall - challenging and exciting."

Giampaolo Dall'Ara, Head of Track Engineering: "The Montreal track is narrow with walls that are very close in some places. It offers interesting challenges. The first one is to find the right level of aerodynamic efficiency, because the level of downforce and drag is lower than on most of the other tracks. The time spent on the straights requires maximising the speed, while the corners, with the exception of the hairpin, are low speed and feature changes of direction. Therefore the car needs to be well balanced under braking, needs good traction and must be reactive. The next interesting challenge is the fact Pirelli has decided to provide us with the soft and the super soft tyre compounds as they did in Monaco. We don't expect any problems with the super soft tyre in qualifying, but then the more difficult part will be to find the right race strategy to get the maximum out of the tyres. What's different to last year is that there will only be one DRS zone. However, I don't expect this to make a big difference, because overtaking is normally possible on the Montreal track. On the car we will have a new rear wing for the medium downforce requirement, plus some minor modifications."