Hankook Kinergy 4S2 X H750A is a allround tyre made in total of 28 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/45 R20 is 60mm wider than the narrowest dimension (215) and 10mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In 275/45 R20, there is only one possible speed index for Hankook Kinergy 4S2 X H750A - "W", which is good for speeds up to 270 km/h. In 275/45 R20, Kinergy 4S2 X H750A usually competes against HA32 Solus 4S, which is a tyre from Kumho with a rating of 73%, compared to 100% of the Hankook in question.