Sauber bound Nick Heidfeld has completed his final task for Pirelli with a two-day test session at the Jerez circuit in Spain. It was the Italian tyremaker’s third test ahead of its official return to Formula 1 next season.

Pirelli tried out a range of compounds and worked on finalising the development of tyre construction with Heidfeld, who completed nearly 100 laps on each of the days. They are preparing four slick options for next year. The next test will be in Monza, and the man behind the wheel will be Romain Grosjean, the 24-year old ex-Renault test driver who took over Nelson Piquet’s race seat last season.

After losing his place in Renault to Vitaly Petrov, Grosjean raced in the FIA GT1 World Championship and Le Mans, before recently returning to the GP2 series. The French-Swiss driver will go through seat-fitting in the Toyota TF109 Pirelli is using for the tests today.

“In order to avoid favouring any individual team, we have jointly decided to release Nick from his contract and now we have chosen Romain to test for us in Monza. He’s packed a lot of experience into a short space of time, including all our GP3 tyre development, so I’m sure he’ll be able to give us some very useful feedback,” said Pirelli’s Motorsport Director Paul Hembery.