Changeable weather conditions saw drivers spend the majority of the two practice sessions on the opening day at the Canadian Grand Prix in their garages as they were intent on saving tyres for the rest of the weekend. F1Technical's lead writer Balazs Szabo reports on tyre useage The Montreal Grand Prix weekend kicked off with a delay due to the changing weather conditions that saw rapid switches from sun to rain and even hail. There were about thirty minutes at the start of the second free practice session where it was possible to run consistently with dry weather tyres but before and after that, the rain got in the way. The quickest time overall was set by Fernando Alonso (Aston Martin)...
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