Germany Friday quotes: Sauber

Kamui Kobayash - 16th: "It was not so easy today. We went through our programme with no problems, but overall we are struggling with grip and don't understand why yet. We are not yet as good as we expected we would be, and have to improve for tomorrow."

James Key, Technical Director: "In the morning session both cars did a round testing aero items. We were looking at various new parts and did no real set up work in that session. In the afternoon we concentrated on the tyres available. We ran the test tyre Pirelli provided, which was a soft compound, and it looked okay. We also ran the standard soft tyre for here, and did some race runs towards the end of the session. Generally it was a very productive day. Mainly we now need to work a little on getting the tyres to work in the colder temperatures."