GP2 Media Service Organisers of the GP2 Series have confirmed that Formula 1's feeder series will adopt the rule stating that both tyre compounds must be used in the feature race. The GP2 drivers race twice across a weekend, with the feature race usually taking place after Formula 1's qualifying session. Drivers must make a pit stop during the feature race, but from 2014 the option and prime tyre must be used in the feature race. During 2013, several drivers claimed victory in the feature race by running two stints on prime tyres, which consequently scuppered their prospects in the sprint race due to having only a set of option tyres remaining. GP2 tyres are supplied by Pirelli....
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