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Formula 1: Pirelli say tyre failures caused by ‘running conditions’

PIRELLI says the two high-speed tyre failures at the Azerbaijan Grand Prix were caused by the way in which they were being run.

Red Bull’s Max Verstappen lost the race victory and Lance Stroll’s Aston Martin crashed out of fourth when their left rear tyres failed at close to 200mph.

Pirelli said an investigation found the tyres suffered “a circumferential break on the inner sidewall”.

It said this was “related to the running conditions of the tyre”.

This was despite the teams in question following the prescribed starting parameters for the tyres, Pirelli said.

Pirelli added: “The process established that there was no production or quality defect on any of the tyres; nor was there any sign of fatigue or delamination.”

The company’s statement said that it had submitted its report to governing body the FIA and the teams.

Pirelli and the FIA have subsequently agreed a new set of protocols governing tyre usage. These will come into force from this weekend’s French Grand Prix. – bbc.com