Circuit: Jerez de la Frontera, Spain.4.423km
Objective: Preparation of the FW31 for the 2009 season: set-up optimisation work, tyre testing, reliability and systems checks.
Weather: Clear and dry.
Average ambient temperature: 15C
Sam Michael, Technical Director, Williams F1:
"Kazuki continued work on set-up items and completed some systems and cooling checks today. We have some useful information which we will look into tonight in preparation for tomorrow's session. Nico Rosberg joins the team for the last day and will share pitstop practice work with Kazuki in the morning before taking over the FW31 for the final half day of testing in the afternoon."