Goodyear UltraGrip Performance SUV Gen-1 245/45 R21

Goodyear UltraGrip Performance SUV Gen-1 is a winter tyre made in total of 52 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 245/45 R21 is 30mm wider than the narrowest dimension (215) and 40mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height.