The German squad is carrying out two days of testing at the Circuit de Catalunya as it continues to help Pirelli with the development of its compounds for next year.

Rosberg took to the track in the W06 mule car, but cool temperatures in the morning and rain in the afternoon meant the day was not as productive as expected, making it hard for the Italian manufacturer to obtain representative data.

Rosberg completed a total of 60 laps, 46 of them in the morning.

The championship leader worked with slicks in the morning but was then forced to use full wets in the afternoon, covering an additional 14 laps.

The test continues tomorrow, with Lewis Hamilton testing the 2017 tyres for the first time.