Sources within Pirelli have confirmed that Nico Rosberg suffered 2 punctures in the laps preceding his second pitstop on lap 51 of the Canadian Grand Prix. The cause of both punctures has been identified as debris damaging the tyre. The first puncture is understood to have been relatively minor leading to a slow loss of pressure, the second more substantial resulting in a rapid loss of pressure thus requiring immediate serving of car number 6. Some parties have questioned Mercedes decision to service Nico with a set of Soft tyres in his second (unplanned) stop on lap 51. With only 19 laps to go both the Super Soft and the Ultra Soft compound could have completed the race distance. However...
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