Spain Friday quotes: Sauber

Sergio Perez - 12th: "In the morning the car's balance wasn't good and we had to change quite a lot for the afternoon session. We worked in the right direction, as it was an improvement and therefore it really was a productive day. I found on long runs both tyre compounds were degrading quite a lot, but we will see what we can do to help in this respect."

Giampaolo Dall'Ara, Head of Track Engineering: "Overall we had a good Friday. We were able to cover the programme with both cars and both tyre compounds. Sergio's last run was somewhat hampered after a previous off which had resulted in some damage of the floor. What we can see from measurements the new aero package, which was introduced in Mugello, works as expected. So also in that regard we are quite happy. We have done good mileage and now have a lot of data to look at."