Haas F1 team principal Guenther Steiner admits that the team still doesn't know whether it's got on top of the tyre performance issues that have been plaguing the squad since the start of the season. Romain Grosjean and Kevin Magnussen have performed consistently well in qualifying only to drop backwards on race day, when the VF-19 hasn't been able to get this year's Pirelli compounds into the optimal temperature operating window. Haas had a breakthrough in Spain with both drivers finishing in the top ten for the first time in 2019 to bring an end to a three-race drought of points. Haas' Steiner is done 'writing letters' to F1 stewards But they had a mixed time again in Monaco, with...
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