GoodYear Efficientgrip SUV is a summer tyre made in total of 122 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/55 R18 is 10mm wider than the narrowest dimension (215) and 60mm narrower than the widest one (285). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R18, there is only one possible speed index for GoodYear Efficientgrip SUV - "V", which is good for speeds up to 240 km/h. In 225/55 R18, Efficientgrip SUV usually competes against Blizzak 6, which is a tyre from Bridgestone with a rating of %, compared to 0% of the GoodYear in question.