Christian Klien posted the quickest time on the second day of Formula One testing at Jerez as BMW Sauber continued to lead the way in Spain.
The Austrian took over at the wheel of the lone F1.08 from Marko Asmer and spent the day working on mechanical set-up of the car, while also testing a number of aerodynamic settings focused on the remaining events on the 2008 calendar.
Klien completed 84 laps during the course of the day and posted a best time of 1min 19.537secs, which put him three tenths of a second clear of his nearest rival.
“A whole day's testing without any problems gave me the opportunity to provide the engineers with a lot of feedback on new components,” he said. “The new surface on parts of the track provides better grip, and has smoothed out the bumps that were there before.”
Klien was due to hand the car over to Robert Kubica for the third day, but with the Pole suffering from an infected tooth, Nick Heidfeld will instead take over at the wheel.
Klien was followed on the timesheets by Sebastian Vettel who, fresh from his maiden F1 win at the weekend in Monza, was called up by the senior Red Bull team to complete a day of testing in the RB4.
The young German completed 60 laps over the course of the day with a best time of 1min 19.878secs as he acclimatised himself with the team he will join for 2009. Although some time was lost with a gearbox issue, he was able to complete valuable set-up work and will continue at the wheel tomorrow.
Vettel was four tenths of a second clear of Sebastien Buemi as the GP2 regular as given his opportunity to test with Toro Rosso. Buemi was one of the busier drivers on track as he completed nearly 90 laps, despite the start of his 'audition' for a 2009 race seat being delayed by a mechanical issue early in the morning.
The Swiss driver completed aero configuration and general set-up work in the STR3 and will now hand the car to Takuma Sato tomorrow as the Japanese driver makes his return to F1 for the first time since the collapse of the Super Aguri team earlier in the year.