Hankook ION Evo is a summer tyre made in total of 24 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 245/45 R19 is 30mm wider than the narrowest dimension (215) and 60mm narrower than the widest one (305). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height. In 245/45 R19, there is only one possible speed index for Hankook ION Evo - "Y", which is good for speeds up to 300 km/h. In 245/45 R19, ION Evo usually competes against PremiumContact 7, which is a tyre from Continental with a rating of 99%, compared to 0% of the Hankook in question.