Goodyear Eagle F1 Asymmetric SUV is a summer tyre made in total of 28 sizes, ranging from R17 to R17 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height. In 255/50 R19, there are 2 possible speed indexes for Goodyear Eagle F1 Asymmetric SUV - "W","Y", which are good for speeds up to 270, 300 km/h.