Singapore GP practice quotes: Sauber

Esteban Gutierrez - 10th/16th: "It was an okay Friday. We managed to get in some good laps and we were able to get through some things that we were planning to do in order to improve qualifying. My experience is improving, but I need to work on certain things. We worked on the set-up of the car. The long runs look okay. There is a lot of thermal degradation on the tyres, which will be quite a challenge during the race. This is something we need to look into to try to find the right compromise for qualifying and a good race pace. Overall the car feels good, but we need to keep working on looking to qualifying tomorrow."

Tom McCullough, head of track engineering: "Today we evaluated our updated package and the supersoft and the medium tyres. The initial analysis of the aero parts is good, and we will look further into those later on. There is a big difference in the tyre performance, on both low and high fuel. We still have some work to do, particularly with low fuel, but we think there is more potential in the car. With qualifying being so important, that's where our main focus will be going into this evening to improve the car from FP3 onwards."