The Turanza T005 was introduced in 2018, but still stands as a great tyre, offered in incredible 350 different sizes. It’s universal also in it’s properties - it’s a balanced mix of wet and dry performance with above-average rolling resistance.
195/50 R15 doesn't belong to the most popular dimensions for summer tyres - there are 60 tyre models available, which can be compared to 235/45 R18, 185/60 R15, 255/50 R19. Let's break down the sizing - 50 is height of the tyre, which is calculated as 50% of the tyre width (195mm), which means the sidewall height has 97.5 mm. The wheel diameter is R15, which means it fits to a 15 inch/381mm diameter wheel. The total circumference of the tyre is 1809.56 mm, which is very similar to 175/70 R13(1807.04 mm), 185/60 R14(1814.58 mm), 155/80 R13(1816.47 mm), 215/40 R16(1817.1 mm), 175/55 R15(1801.7 mm), 165/60 R15(1818.98 mm), 160/60 R15(1800.13 mm). There are multiple speed indexes available for summer tyres in 195/50 R15: H(210km/h), T(190km/h), V(240km/h). The same goes for weight indexes: 82, 86. You can find 195/50 R15 on 23 car models - mainly Ford, Mazda, Lancia, Mitsubishi, Renault.