Sergio Perez has slammed Pirelli for supplying overly conservative tyre compounds at the Spanish grand prix. F1's official tyre supplier had a tumultuous and highly controversial 2013 season, but so far the emphasis this season has been on the radical new rules and quiet engines. "The problem is that Pirelli is not helping us to attack and enjoy driving," Mexican Perez, who drives for Force India, is quoted by Russia's f1news.ru. "We have lost downforce compared to last year and now we have to drive very hard compounds," he added. "It seems that Pirelli is worried about the graining of the front tyres, but if you look at the difference between us and GP2, I think...
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