F1: Pirelli says Qatar GP tyre failures were caused by kerbs

A spate of tyre failures during last month’s Qatar Grand Prix were caused by running over the circuit’s kerbs and not due to any production defects, Pirelli said on Friday.

Mercedes’ Valtteri Bottas, Williams pair George Russell and Nicholas Latifi and McLaren’s Lando Norris suffered left-front failures during the floodlit race at Losail two weeks ago as they tried to make a one-stop strategy work.

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“Based on the findings obtained so far, the origin of the problem is mainly due to the amount of time these tyres were run on the kerbs, at high speed and with considerable lateral and vertical loads,” said Pirelli in a statement at the Saudi Grand Prix.

The supplier said the situation was unique to the Losail circuit, a regular MotoGP venue which was being used for the first time in Formula One.

“The heavy demand caused by running over these kerbs… damaged the tyre construction and led to a loss of pressure in the internal sidewall, which consequently caused the structure to collapse after several seconds,” Pirelli said.

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