Here in the UK we just get average weather all year round, so stick to the factory tyres all year. Though we can get the occasional bad winter, snow, ice, blizzards, and that's when I just stay in bed watching TV, drinking tea and eating toast and jam, and thankfully retired 
PS...some petrol heads here, do go for summer/winter tyres, but just a limited number of Smart owners, that need to be somewhere in the snow.
PS...some petrol heads here, do go for summer/winter tyres, but just a limited number of Smart owners, that need to be somewhere in the snow.