F1: Pirelli adds super-hard, hyper-soft tyres to 2018 F1 range
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File:F1 tire 2012-supersoft.svg - Wikimedia Commons
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Pirelli announces new, pink F1 tire for 2018; fans to select name - MotorSportsTalk | NBC Sports
Pirelli adds Superhard and Hypersoft to 2018 tyre range - Pitpass.com
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Getting to know: Pirelli's F1 Tires Range
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Ultrasoft tyres to debut in Monaco
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Pirelli confirms 12-hour test and new ultra-soft compound
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Ultrasoft, supersoft and soft tyres for Singapore
Pirelli, Hembery: “Curiosi di scoprire il potenziale della ultra soft”
