Falken Azenis FK510 is a summer tyre made in total of 113 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 285/35 R18 is 80mm wider than the narrowest dimension (205) and -50mm narrower than the widest one (235). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (285mm), which results in 99.75mm sidewall height. In 285/35 R18, there is only one possible speed index for Falken Azenis FK510 - "Y", which is good for speeds up to 300 km/h. In 285/35 R18, 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.