Goodyear UltraGrip Performance Gen-1 is a winter tyre made in total of 100 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 235/55 R17 is 40mm wider than the narrowest dimension (195) and 40mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height. In 235/55 R17, there is only one possible speed index for Goodyear UltraGrip Performance Gen-1 - "V", which is good for speeds up to 240 km/h. In 235/55 R17, UltraGrip Performance Gen-1 usually competes against Winter i*cept evo2 W320, which is a tyre from Hankook with a rating of 0%, compared to 0% of the Goodyear in question. Latest test in 235/55 R17 was held by GTÜ in 2017, where UltraGrip Performance Gen-1 received rating "Recommended" and finished on the 2. place. It was tested on a .
