Europe preview quotes: Sauber

Sergio Perez: "I enjoyed the Montreal result very much and I want more of that. I like the track in Valencia a lot and also the atmosphere during the race weekend, as we are quite close to the fans. I don't have the best memories of my Formula One debut race in Valencia, as it was last year and a very difficult one for me. I was returning to racing after my heavy shunt in Monaco and, in hindsight, I have to admit I don't think I was fit enough. I didn't feel well at all. The Valencia street circuit has quite long straights with hard braking into the corners, and what we have learnt from Montreal will be important for that."

Giampaolo Dall'Ara, Head of Track Engineering: "Valencia is a street circuit, but not a typical one, because the surface is very smooth, and the kerbs are not very high. In addition, the aerodynamic efficiency is significantly more important than, for example, in Monaco or Singapore, and there are proper run-off areas. Most of the corners are slow, but you cannot ignore the level of top speed. As a result of this layout, braking stability and traction are very important. In Valencia we have to expect high temperatures at this time of the year, so the tarmac can get very hot. Pirelli is supplying us with the medium and the soft compound tyres, which have changed a bit since last year and may need us to look at a slightly different strategy for them. Rear degradation could be an issue. Overtaking is not easy on this track, therefore qualifying is of particular importance. The car is basically unchanged since Montreal, however, we might run a higher level of downforce."