Sauber & Ferrari are using the time between the two Barcelona tests to complete the first of their two permitted filming days of 2015. With each team permitted to run two filming days a year, some are choosing to use one or more of their allocated days early on. McLaren used both of their filming days last week at Catalunya in an apparent attempt to ensure some modicum of reliability when testing proper began last Thursday, while Mercedes completed a shakedown of their W06 at Silverstone a few days before Jerez testing began. The filming days are restricted to 100 kilometres in total, and must be completed on specially made Pirelli tyres designed specifically to inhibit performance. With...
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