I wouldn't advise using winter tyres in the summer months. Winter tyres are designed for cold temperatures. When it's warm, you won't need the deep tread depths to handle snow, ice etc. The rubber compound will wear down faster in warm weather, firstly. In summer, winter tyres also won't provide the same handling capabilities as summer or all-season tyres, so you won't get the sharp response from a winter tyre in warm weather. They'll slow you down and make your car less fuel-efficient, too. If you want all-season tyres, I'd advise Michelin CrossClimate+, Continental AllSeasonContact or Goodyear Vector 4Seasons Gen-2.