– Haas driver Romain Grosjean says gathering data from Pirelli's wet tyres during pre-season testing will be crucial, due to the further risk of aquaplaning with the rubber's increased width this year.Pirelli has been clamouring for increased wet weather testing, a situation hurried by the introduction of tyres 25 per cent wider than 2016, and has been afforded wet running during testing.The Circuit de Barcelona-Catalunya will be artificially watered on the final day of the opening test on March 2, unless significant rainfall affects running over the previous three days.Grosjean, who has been tasked with driving Haas' VF-17 on that day, reckons the running will be vital for various...
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