After the shame lived at Silverstone, Pirelli has assured that there are different causes that led to the tyres failure. The first cause is rear tyres that were mounted in the wrong way, this means: the left tyre on the right side and the right tyre on the left side, on the cars that suffered failures. The tyres supplied this year are asymmetric, they say. The second cause is the under-pressure. Teams could have used pressure’s values lower than those indicated by Pirelli, so tyres would have been subjected to more stressful working conditions. The third cause, says Pirelli, are extreme camber angles. And finally, the last cause could be the high kerbs of Silverstone.
A part of that, Pirelli says that this problem has nothing to do with the delamination issue that we saw in previous race, which was tried to solve with new tyres tested in Canada, but teams declined to use them. So, Pirelli found another solution with a different bonding process to attach the tread to the carcass.
The Italian firm also asks for new regulations that would allow them to access to real-time data like pressure, temperatures and camber angles. Meanwhile, Pirelli has proposed the following measures for the next Grands Prix in agreement with the FIA, FOM, the teams and the drivers:
-The use of the evolution of the current tyre that was tested in Canada for the German Grand Prix this weekend. The rear tyres that will be used at the German Grand Prix have a Kevlar construction that replaces the current steel structure and the re-introduction of the 2012 belt, to ensure maximum stability and roadholding. Given that these tyres are asymmetric as well, it will be strictly forbidden to swap them round. The front tyres, by contrast, will remain unaltered.
-From the Hungarian Grand Prix onwards, the introduction of a new range of tyres. The new tyres will have a symmetrical structure. The tyres that will be used for the Hungarian Grand Prix onwards will combine the characteristics of the 2012 tyres with the performance of the 2013 compounds. Essentially, the new tyres will have a structure, construction and belt identical to that of 2012. The compounds will be the same as those used throughout 2013. This new specification will be tested on-track together with the teams and their 2013 cars at Silverstone from 17-19 July in a session with the race drivers during the young driver test.