ANGRY SEB: Sebastian Vettel has started a war with Pirelli due to his outbursts at the 2015 Belgian GP. Image: AFP / Twitter
LONDON, England - Formula 1 tyre manufacturer Pirelli is set to announce that debris on the track caused Sebastian Vettel's tyre blowout at Spa-Francorchamps.
In the incident that sparked an expletive-filled post-race rant, F1's controversial tyre supplier argued initially that excessive wear caused by Ferrari's ambitious one-stop strategy was the cause of the failure.
Pirelli had said on Friday (August 24) an external source, such as track debris, was to blame for Nico Rosberg's high-speed blowout and spin.
Now, the tyre supplier is preparing to announce the results of an exhaustive investigation into the Vettel blowout.
Pirelli said in a media statement: "The technical investigation into Vettel's tyre at Spa is now finished, the results will be presented at Monza."
Italy's Autosprint speculates that Pirelli may be ready to announce that wear was not the cause of the blowout, but track debris, with up to 60 other tyres showing signs of damage following the Belgian GP.
That could be why Pirelli has stuck to its earlier decision to bring softer compounds than usual to high-speed Monza this weekend (September 5-6).
IS ACTUAL COMPOUND FLAWED?
Sauber engineer Giampaolo Dall'Ara backed the call.
Dall'Ara said: "The medium and the soft are a way more sensible choice than the medium and hard we have had (at Monza) for years.
"They will open up new scenarios and the show will benefit from such a choice."
However, there are still some who believe Pirelli's actual tyre construction is flawed.
Former Red Bull driver Mark Webber told Auto Motor und Sport: "I do not believe the tyre damage (at Spa) has something to do with the compound. That would mean you could only use it for five laps at Monaco."
And Michelin's Pascal Couasnon told Germany's Sport Bild: "We know Spa very well, as we have been there every year with the WEC. And we know it is a very demanding circuit for the tyres."