Kumho Ecsta PS71 SUV is a summer tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (215mm), which results in 107.5mm sidewall height. In 215/50 R18, there is only one possible speed index for Kumho Ecsta PS71 SUV - "W", which is good for speeds up to 270 km/h. In 215/50 R18, Ecsta PS71 SUV usually competes against Azenis FK510 SUV, which is a tyre from Falken with a rating of 67%, compared to 64% of the Kumho in question.