Pirelli says cause of Vettel’s puncture may never be found

Vettel hit trouble two laps from home at Silverstone last weekend when his front left tyre deflated on the run down to Brooklands – before he was pitched off the track at Luffield. He was able to pit for fresh rubber but dropped down the order to finish seventh.With Kimi Raikkonen having suffered a tread failure on the previous lap, Pirelli launched an immediate joint investigation ... Keep reading