Japan Friday quotes: Sauber

Nick Heidfeld - 15th: "Driving on the Suzuka Circuit always gives me a lot of enjoyment! I found the car really not too bad on the harder Prime compound, but then it was a surprise when we fitted the softer Option tyres. The car behaved a lot differently and the lap time actually didn't improve. This is something we have to sort out before qualifying. In the first session this morning I did runs comparing different front wings."

James Key, Technical Director: "It was a standard Friday for us. We had some aero test items in the morning, and rather than doing a lot of set-up work we mainly concentrated on running different parts to make sure we optimise our package from Singapore. In the afternoon we made some set-up changes and ran both tyre compounds. We found we have a small inconsistency in the balance in sector two, which is by far the weakest sector for the car. We have to work on that tonight. We have a lot of data to look at and we'll analyse this in preparation for tomorrow."