Kumho Ecsta HS51 is a summer tyre made in total of 63 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/45 R18 is 70mm wider than the narrowest dimension (165) and 0mm narrower than the widest one (235). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height. In 235/45 R18, there are 2 possible speed indexes for Kumho Ecsta HS51 - "V","W", which are good for speeds up to 240, 270 km/h. In 235/45 R18, Ecsta HS51 usually competes against Ventus Prime3 K125, which is a tyre from Hankook with a rating of 77%, compared to 50% of the Kumho in question. Latest test in 235/45 R18 was held by Autozeitung in 2019, where Ecsta HS51 received rating "" and finished on the 9. place. It was tested on a Škoda Superb.