Programme: Nick Heidfeld spent his first day of testing in Jerez concentrating on set-up changes, including new dampers, and their interaction with the new Bridgestone Potenza tyres.
Robert Kubica, who turned 22 today, continued testing the new gearbox and completed a huge set-up programme whilst also carrying out mechanical system checks which were on today's to do list.
Both drivers had a trouble-free day.
What comes next: Tomorrow is the third and final day of the Jerez test. While Nick will continue to drive, Timo Glock takes over from Robert. Both Nick and Timo will have the new gearbox fitted in their cars.
For Timo it is the second test day with the BMW Sauber F1 Team. The 24-year-old German gave his debut at the wheel of an F1.06 at last week's Barcelona test and already joined the team today in the garage.
The weather forecast for Friday is still not promising and the team have prepared a rain programme for tomorrow.
Chassis / engine: BMW Sauber F1.06B-04 / BMW P86 V8
Test kilometres today: 438 km (99 laps)
Fastest lap: 1:20.171 min (on lap 81)
Chassis / engine: BMW Sauber F1.06B-05 / BMW P86 V8
Test kilometres today: 394 km (89 laps)
Fastest lap: 1:20.477 min (on lap 29)
-credit: bmw sauber