Schumacher: Degradation needs work

Michael Schumacher has revealed that tyre degradation is an area where Mercedes must improve, as well as admitting that some of the team's chief rivals were getting better mileage out of the Pirelli rubber. Schumacher completed 79 laps during Friday's testing, setting his best time late in the day, on the first flying lap of one of several short runs on Pirelli's soft compound tyre. However, in the same eight-lap stint as the German set his quickest time, he lost almost four seconds, the first two seconds lost within five laps

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