Kumho ECSTA Sport S PS72 is a summer tyre made in total of 76 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 30mm wider than the narrowest dimension (225) and 30mm narrower than the widest one (285). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In
255/40 R21, ECSTA Sport S PS72 usually competes against
RainSport 5, which is a tyre from
Uniroyal with a rating of 69%, compared to 78% of the
Kumho in question.
Summer
