Pirelli boss Mario Isola says initial investigations by F1's tyre supplier suggest debris may have caused the tyre failures on Max Verstappen's and Lance Stroll's cars that sent both drivers crashing out of the Azerbaijan GP. But Isola says a full analysis of the failed tyres will take place at Pirelli's base in Italy in the coming week before they know for certain what happened. He also revealed that they had discovered a cut on Lewis Hamilton's left-rear tyre too from the same stint as the two accidents. Speaking to Sky Germany after the Baku race, Isola said: "It's a bit early to understand what happened to the tyres. We are waiting for the tyres back to the fitting area to analyse...
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