Barum Quartaris 5 is a allround tyre made in total of 46 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 195/50 R15 is 40mm wider than the narrowest dimension (155) and 40mm narrower than the widest one (235). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (195mm), which results in 97.5mm sidewall height. In 195/50 R15, there is only one possible speed index for Barum Quartaris 5 - "H", which is good for speeds up to 210 km/h. In 195/50 R15, Quartaris 5 usually competes against Quadraxer 2, which is a tyre from Kleber with a rating of 61%, compared to 70% of the Barum in question.