Sergio Perez has stepped up his attack on F1 tyre supplier Pirelli, after his "explosion" in Korea a few days ago. Pirelli had played down the Mexican's failure, saying it was simply caused by Perez...

Sergio Perez has stepped up his attack on F1 tyre supplier Pirelli, after his "explosion" in Korea a few days ago.

Pirelli had played down the Mexican's failure, saying it was simply caused by Perez badly locking the brakes on his McLaren.

"That something happens after a brake lockup is absolutely unacceptable," Perez is quoted by Germany's Auto Motor und Sport.

He said he doubts Pirelli's official explanation.

"I've never heard of a brake (lockup) automatically leading to an explosion of tyres," said Perez.

"For me it was not normal: it's unacceptable that the tyre explodes."

Perez's attack follows those of Fernando Alonso and Mark Webber, towards the end of a tumultuous season for F1's official tyre supplier.

"I knew that there were cars behind me and I just prayed that the rubber pieces do not hit them," Perez continued.

He revealed: "We could see that the tyre temperatures were going up, which is why I braked five metres earlier and with less pressure on the pedal.

"I was surprised when the brakes locked. I came around the corner and the tyre exploded on the straight," added Perez.

 

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Pirelli explosion 'unacceptable' - Perez