Friday FIA press conference from Hockenheim in Germany with John Booth (Marussia), Paul Hembery (Pirelli), Federico Gastaldi (Lotus), Christijan Albers (Caterham), Toto Wolff (Mercedes) and Cyril Abiteboul (Renault).
After being tested by teams at last week's Young Driver Test at Silverstone, Pirelli's new specification will make their race debut this weekend at the Hungaroring.
"If we'd brought the hard tyre, we would probably be looking at one stop," says Pirelli's Paul Hembery. "We're confident that we're in for another action-packed race tomorrow."