Falken Azenis FK510 is a summer tyre made in total of 113 sizes, ranging from R17 to R17 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 275/30 R19 is 70mm wider than the narrowest dimension (205) and -40mm narrower than the widest one (235). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height. In 275/30 R19, there is only one possible speed index for Falken Azenis FK510 - "Y", which is good for speeds up to 300 km/h. In 275/30 R19, Azenis FK510 usually competes against Ventus S1 evo3 K127, which is a tyre from Hankook with a rating of 81%, compared to 74% of the Falken in question.