British GP: Pirelli says Sergio Perez's tyre blow not a delamination

Pirelli believes that Sergio Perez's tyre failure in final free practice was caused by a large cut in the sidewall

British GP: Pirelli says Sergio Perez's tyre blow not a delamination

Perez brought out the red flag after 13 minutes of running on Saturday morning when his left rear tyre failed while running through Copse corner.

With debris from the tyre littering the track, officials had no option but to stop running so the track could be cleared.

Although the incident follows a run of delaminations this year, Pirelli motorsport director Paul Hembery insisted that the Perez incident was totally unrelated - and was a more standard puncture.

"It was a cut in the sidewall, which is in the direction of rotation," he told AUTOSPORT. "It is a classic unfortunate tyre deflation. Whatever it was went in, and then came out again."

Hembery said it was too early to judge what caused the cut, and only a track inspection later would highlight if it had been caused by a kerb or debris.

"It could be interference, or maybe something on a kerb. It's something we need to look at," he said. "But it's quite clear as the cut is in a rotational direction, so at least it's not a delamination."

Hembery insisted that the incident was totally unrelated to the new bonding process that Pirelli has introduced for its rear tyres this year - and stated that the Perez incident would have happened even if he had been running last year's specification of rubber.

"It's completely independent of anything that has happened before," he said.

shares
comments
British GP: Nico Rosberg pips Lewis Hamilton in final practice

Previous article

British GP: Nico Rosberg pips Lewis Hamilton in final practice

Next article

Lotus agrees to modify suspension for the German Grand Prix

Lotus agrees to modify suspension for the German Grand Prix
Load comments

About this article

Series Formula 1
Drivers Sergio Perez
Author Jonathan Noble
How long can F1 2021's brewing title battle stay clean? Plus

How long can F1 2021's brewing title battle stay clean?

Lewis Hamilton and Max Verstappen have been evenly matched so far in the 2021 Formula 1 title race. Neither has been afraid to get aggressive against each other on track, teeing up an enthralling contest as the year unwinds. But is their rivalry destined to end in broken shards of carbon fibre?

Formula 1
May 13, 2021
What the Spain result tells F1 about the next phase of the Mercedes/Red Bull title fight Plus

What the Spain result tells F1 about the next phase of the Mercedes/Red Bull title fight

OPINION: Lewis Hamilton and Mercedes have recovered from their pre-season woes to take three wins from the opening four races of 2021. But each time Red Bull and Max Verstappen have pushed them hard. So, what clues did the latest round of that battle – the Spanish Grand Prix – tease about the next stage of the season?

Formula 1
May 12, 2021
How Brabham’s one-hit wonder was boxed into a corner Plus

How Brabham’s one-hit wonder was boxed into a corner

The Brabham BT46B raced once, won once, then vanished – or did it? STUART CODLING reveals the story of the car which was never actually banned…

Formula 1
May 11, 2021
The changes Barcelona needs to provide a modern-day F1 spectacle Plus

The changes Barcelona needs to provide a modern-day F1 spectacle

Formula 1’s visits to Circuit de Barcelona-Catalunya over recent years have been met with familiar criticisms despite tweaks here and there to the track to improve racing. With the 2021 Spanish Grand Prix largely going the same way, proper solutions need to be followed to achieve F1’s wider targets

Formula 1
May 10, 2021
Spanish Grand Prix Driver Ratings Plus

Spanish Grand Prix Driver Ratings

Often described as Formula 1's laboratory, the Circuit de Catalunya-Barcelona gave the clearest demonstration yet of the pecking order in 2021. And it's the key discrepancies from that order which illuminate who is excelling, and who needs to hit the reset button

Formula 1
May 10, 2021
How Red Bull’s deja vu set Hamilton on the winning path in Spain Plus

How Red Bull’s deja vu set Hamilton on the winning path in Spain

An aggressive first corner move from Max Verstappen appeared to have set the Red Bull driver on course for victory in the Spanish Grand Prix. But canny strategy from Mercedes - combined with the absence of Red Bull's number two from the lead group - allowed Lewis Hamilton to pull off a demoralising reversal

Formula 1
May 10, 2021
The toe-in-water origins of Lotus’s groundbreaking F1 journey Plus

The toe-in-water origins of Lotus’s groundbreaking F1 journey

In the first part of our history of Lotus, DAMIEN SMITH recalls how Formula 1 wasn’t an immediate priority for team founder Colin Chapman – but once he got a taste for it he just couldn’t stop…

Formula 1
May 9, 2021
How Hamilton’s qualifying record compares to Senna and Schumacher Plus

How Hamilton’s qualifying record compares to Senna and Schumacher

Lewis Hamilton has just become the first driver to record 100 world championship Formula 1 pole positions. Time to revisit a debate we discussed when he reached 150 front row starts in 2020.

Formula 1
May 8, 2021