Falken ZIEX ZE914 EcoRun is a summer tyre made in total of 117 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/50 R17 is 60mm wider than the narrowest dimension (165) and -10mm narrower than the widest one (215). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In 225/50 R17, there is only one possible speed index for Falken ZIEX ZE914 EcoRun - "W", which is good for speeds up to 270 km/h. In 225/50 R17, ZIEX ZE914 EcoRun usually competes against Ventus Prime3 K125, which is a tyre from Hankook with a rating of 52%, compared to 0% of the Falken in question. Latest test in 225/50 R17 was held by Autozeitung in 2020, where ZIEX ZE914 EcoRun received rating "Highly recommended" and finished on the 7. place. It was tested on a BMW 3 series.