Pirelli has blamed the teams for triggering the Silverstone tyre debacle – a move that might cause further tension between the Italian company and its customers.
Pirelli has also confirmed that it will use the Canada development rear tyres in Germany this weekend, with Kevlar belts – and says that a new range will be introduced in Hungary following the Silverstone test later this month, in effect combining the 2012 structures and 2013 compounds.
Meanwhile its investigations has shown that left-to-right rear tyre swapping, as explained here some weeks ago, was one of the factors at Silverstone. Pirelli had previously not been concerned about teams using that tactic.
It also says that teams were running excessively low pressures and extreme cambers, and adds that the Silverstone kerbs were another factor. It says that its tyres are perfectly safe if operated correctly, noting: “In line with what the company always claimed the range of tyres, 2013, if used correctly, does not jeopardize the safety of drivers, and has all the safety features required by the FIA.”
Pirelli wants the FIA to regulate pressures and cambers in the future.
For the German GP only asymmetrical tyres will still be used and Pirelli says teams will not be allowed to swap side-to-side. From Hungary onwards it won’t be an issue as they will be symmetrical.
Intriguingly Pirelli also says that the Silverstone failures were not related to delaminations earlier in the year, when tyres stayed inflated after losing treads.
Paul Hembery said: “What happened at Silverstone was completely unexpected and it was the first time that anything like this has ever occurred in more than a century of Pirelli in motorsport. These incidents, which have upset us greatly, have stressed the urgency of the changes that we already suggested – which will be introduced during for free practice in Germany on Friday.
“We would like to acknowledge the willingness of the FIA, FOM teams, and drivers to act quickly to find an immediate solution to the problem. In particular, the adoption of winter tests, arranged with the FIA, that are more suitable for tyre development and the possibility of carrying out in-season testing will contribute to the realisation of tyres with increasingly improved standards of safety and performance.
“I’d like to re-emphasise the fact that the 2013 range of tyres, used in the correct way, is completely safe. What happened at Silverstone though has led us to ask for full access to real time tyre data to ensure the correct usage and development of tyres that have the sophistication we were asked to provide and extremely high performance that has lowered lap times by more than two seconds on average. While we wait for a change in the rules, we will introduce tyres that are easier to manage.”