Grosjean replaces Heidfeld at Pirelli

Stephan Heublein

Romain Grosjean will replace departing test driver Nick Heidfeld at Pirelli's next formula one tyre test.

Because Heidfeld has signed to return to racing with Sauber in Singapore and beyond, the Italian marque said the German will no longer work with F1's 2011 tyre supplier "to avoid favouring any individual team".

The 33-year-old's last outing with Pirelli was this week at Jerez over two days.