Marko wants tyres to allow cars to unleash full potential

Red Bull’s Helmut Marko has admitted he is not satisfied with the suggested tweaks to compounds made by Pirelli ahead of next weekend’s Spanish Grand Prix. So far in 2013, world champions have been putting pressure on Formula 1′s official supplier to significantly change this season’s heavily-degrading tyres. But, after the first four ‘flyaway’ grands [...]

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