Pirelli believes the ultrasoft will be the most popular tyre compound in the Australian Grand Prix after saying degradation on Friday was below the target laid down by the FIA for 2017. However, Pirelli is confident that as the season goes on, and aero development puts extra loads on the tyres, one-stop races will be less frequent. Friday practice pace-setter Lewis Hamilton managed a 25-lap run on the ultrasoft tyres in the afternoon session. "We have to consider the improvements of the cars," said Pirelli F1 boss Mario Isola. "So mores stress on the tyres means more degradation. If I look at the number of degradation now, we are below the [FIA] target letter. "Looking...
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