Sauber: Pirelli choice wrong for Austin

Sauber believes the tyres brought to Austin for the United States Grand Prix are proving too hard for the Austin track. Pirelli has taken the medium and hard tyres for this weekend's race, and that, added to the slippery surface of the brand new Circuit of the Americas, made things difficult for the drivers during Friday practice. "The biggest challenge is to get the tyres to work, as they are definitely too hard for the circuit," said Giampaolo Dall'Ara, Sauber's head of track engineering.

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