Hankook ION FlexClimate 255/50 R21

Hankook ION FlexClimate is a allround tyre made in total of 27 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/50 R21 is 40mm wider than the narrowest dimension (215) and 0mm narrower than the widest one (255). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height.