GoodYear Efficientgrip SUV is a summer tyre made in total of 122 sizes, ranging from R16 to R16 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 285/45 R22 is 70mm wider than the narrowest dimension (215) and 0mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (285mm), which results in 128.25mm sidewall height. In 285/45 R22, there is only one possible speed index for GoodYear Efficientgrip SUV - "H", which is good for speeds up to 210 km/h.