Former Formula 1 driver David Coulthard has described Sunday's Pirelli tyre failures at the British Grand Prix as "driver killers".
Four competitors suffered blowouts at the weekend, one of which was Mercedes driver Lewis Hamilton, who finished the race fourth despite initially leading at Silverstone.
"In the racing fraternity, tyre failures are known as driver killers," Coulthard wrote in his BBC Sport column. "That is why the problems seen at the British Grand Prix, where four drivers suffered severe blowouts, caused such a concern."
Hamilton has described the tyre controversy as "unacceptable".
