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Pirelli blames tire blowouts at Spa on track debris
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An “exceptional combined effect” of track debris and prolonged usage caused Sebastian Vettel and Nico Rosberg’s high-speed tire blowouts at last month’s Belgian Grand Prix, Formula One supplier Pirelli said yesterday.
“The events at Spa can ... be put down to external factors, linked with the prolonged use of the tires on one of the most severe tracks of the championship,” it said in a statement at the Italian Grand Prix.
The company proposed, with the governing International Automobile Federation, a study “to optimize the way in which circuits are cleaned”.
The FIA said it was satisfied with the thoroughness of the investigation, and Pirelli’s conclusions, and was willing to consider any further safety recommendations.
Drivers said separately that teams had been advised about tire pressures and cambers for Monza, the fastest circuit on the calendar where cars hit speeds in excess of 360kph.
Rosberg told reporters he was confident he would have a safe car this weekend, but others remained sceptical.
“I don’t think anyone is happy with the fact that it’s a cut. Seb didn’t go off track, there are kerbs and you can use them,” Lotus’s French driver Romain Grosjean said moments before the statement was issued.
“I don’t think it’s a good explanation. On the other hand, it’s very hard for Pirelli to replicate what we are asking of the tires when they don’t have a current car and some testing to develop their tires.
“We just need to find a way that the tires don’t go off (wear excessively)”.
Pirelli said microscopic analysis on tires used at Spa found no structural problem. That finding was backed up by further laboratory tests.
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