Continental Hsr2 is a tyre made in total of 9 sizes, ranging from R22 to R22 - this particular dimension is R23, which means it fits to a 23 inch/584.2mm diameter wheel. This tyre profile of 70 means the sidewall height of the tyre is 70% of the tyre width (255mm), which results in 178.5mm sidewall height. In , there is only one possible speed index for Continental Hsr2 - "", which is good for speeds up to km/h.