Pirelli F1 boss Mario Isola says Istanbul Park's high energy loads will submit tyres to a maximum level of stress at this weekend's Turkish GP. Formula 1 returns to the Western Asian country for the first time since 2011. Pirelli has extensive knowledge of the Istanbul Park venue, one of Hermann Tilke's finest designs, but not of the circuit's new asphalt. That unknown coupled with the 5.33km circuit's challenging characteristics decided Pirelli to supply to teams the three hardest compounds in its range - C1, C2 and C3. Like in Portugal, drivers will all get seven sets of soft, three sets of medium, and three sets of hard. Compared to the usual allocation, drivers will therefore receive...
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