A group of leading drivers have called on Pirelli to make their tyres softer, claiming the current tyres are too hard for the 2014 cars.
Two-time Champion Fernando Alonso of Ferrari complained about the tyres during the recent Monaco Grand Prix.
"They are too hard, it's no secret... When Pirelli bring normal tyres they get good grip within two or three laps, but when they bring harder tyres it takes eight or nine laps," the Spaniard said.
"But this is what we have, it's the same for everybody so we need to make them work better than the others."
Mexican Sergio Perez of Force India has also criticised Pirelli for supplying the wrong tyres.
"They can maybe go a step...
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