Crossclimate is now almost a synonym for a allseason tyre and it's second generation is even better than the first one. It's great on snow and dry, while having a superb rolling resistance.
205/50 R16 doesn't belong to the most popular dimensions for allround tyres - there are 3 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 50 is height of the tyre, which is calculated as 50% of the tyre width (205mm), which means the sidewall height has 102.5 mm. The wheel diameter is R16, which means it fits to a 16 inch/406.4mm diameter wheel. The total circumference of the tyre is 1920.77 mm, which is very similar to 185/55 R16(1916.06 mm), 195/65 R14(1913.54 mm), 175/65 R15(1911.66 mm), 185/70 R14(1930.82 mm), 225/35 R18(1931.14 mm), 195/60 R15(1932.08 mm), 215/35 R18(1909.15 mm). There are multiple speed indexes available for allround tyres in 205/50 R16: V(240km/h), W(270km/h), Y(300km/h). The same goes for weight indexes: 87, 91. You can find 205/50 R16 on 24 car models - mainly Opel, Mazda, Volvo, Alfa Romeo, Kia.