Sebastian Vettel is "confident" Sunday's German GP won't be blighted by tyre failures like last weekend's Silverstone race. The British round of the Championship saw several drivers suffer tyre failures, resulting in widespread criticism of the Pirelli tyres and talk of the drivers boycotting this weekend's grand prix. In order to avoid that, Pirelli made alterations to their tyres in the build-up to the Nurburgring event. Not only has the company introduced Kevlar-belted tyres but they have also banned tyre swapping and set new pressure and camber limits. And Vettel is confident the changes have solved the problem. However, if they haven't, he says it is in race director Charlie...
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