Pirelli believe that debris was ‘most likely’ the cause of Sebastian Vettel’s FP2 puncture.
Vettel was topping the timesheets with twenty minutes remaining of the Friday afternoon practice session before his rear right tyre failed and left Vettel returning to the pitlane. Merely minutes later, Giedo van der Garde crashed into the barriers at the same place where Vettel’s puncture developed, leading to suspicions that, like at the British Grand Prix, kerbs were affecting the cars.
Now however, Pirelli believe that debris on-track was to blame.
The British Grand Prix was blighted by a series of tyre delaminations. At the following Grand Prix, the GPDA (Grand Prix Drivers Association) threatened to pull out of the race should the Pirelli tyres show any faults, but these threats turned out to be unnecessary.