GT radial Sport Active is a summer tyre made in total of 18 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/45 R18 is 50mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In
255/45 R18, radial Sport Active usually competes against
Azenis FK510, which is a tyre from
Falken with a rating of 0%, compared to 0% of the
GT in question.
