Raikkonen won the season-opening Australian GP on a three-stop strategy but the Finn lost time the longer he stayed on the older tires.
Caterham driver Giedo van der Garde's left rear wheel came off entirely and he also had to retire.
It was a busy afternoon in the pits as Sauber released Nico Hulkenberg too early and he bumped into the back of a Toro Rosso and with Pastor Maldonado — last year's surprise winner — pitting in the wrong place.
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