McLaren Racing Director Eric Boullier has admitted that their form this year seems to be dependent on the weather conditions. Both Jenson Button and Kevin Magnussen failed to finish in the points this week in Shanghai, where their lack of downforce, in the slow corners particularly, was brutally exposed. This is largely due to McLaren's small operating window in terms of temperature, during which the tyres provide optimal levels of grip. "We are missing downforce, so we cannot exploit the tyres as easily as Mercedes and Red Bull," Boullier told Autosport when asked about their varied form this year. "So it seems the performance range our car works in is weather dependent. If...
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