Goodyear Efficient Grip Performance is a summer tyre made in total of 153 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/50 R17 is 30mm wider than the narrowest dimension (175) 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 (205mm), which results in 102.5mm sidewall height. In 205/50 R17, there are 2 possible speed indexes for Goodyear Efficient Grip Performance - "V","W", which are good for speeds up to 240, 270 km/h. In 205/50 R17, Efficient Grip Performance usually competes against e.Primacy, which is a tyre from Michelin with a rating of 46%, compared to 43% of the Goodyear in question.
