Goodyear UltraGrip 8 Performance 225/55 R17

Goodyear UltraGrip 8 Performance is a winter tyre made in total of 42 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/55 R17 is 30mm wider than the narrowest dimension (195) 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.