GoodYear UltraGrip Performance 3 is a winter tyre made in total of 89 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (175mm), which results in 105mm sidewall height. In 175/60 R18, there is only one possible speed index for GoodYear UltraGrip Performance 3 - "H", which is good for speeds up to 210 km/h.