Pirelli: Tyre construction to remain the same for Silverstone

Formula One racing's official tyre suppliers Pirelli have confirmed that they will not be changing the construction of their P Zero tyres - contrary to initial plans - after announcing the compound allocations for the next three races. The Italian manufacturer had wanted to introduce new rubber to improve both tyre durability and performance

via Formula1.com - Latest Headlines http://www.formula1.com/news/headlines/2013/6/14675.html