Paul di Resta has moved to defend Pirelli on the back of further criticism of its 2013 tyres following the Spanish Grand Prix.High levels of degradation at Catalunya led to nearly 80 pit stops over the course of the race, with four stops being a common strategy in the opening European event of the year as drivers battled to make their tyres last.Some, such as Red Bull boss Dietrich Mateschitz have moved to criticise Pirelli still further on the back of the race, but Force India ace di Resta insisted that the current approach was a step forwards as it opened up the opportunity for teams further down the grid to shine."At the end of the day it's unpredictable for all of us," he was...
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