Goodyear UltraGrip 8 175/70 R13

Goodyear UltraGrip 8 is a winter tyre made in total of 42 sizes, ranging from R13 to R13 - this particular dimension is R13, which means it fits to a 13 inch/330.2mm diameter wheel. 175/70 R13 is 20mm wider than the narrowest dimension (155) and 40mm narrower than the widest one (215). This tyre profile of 70 means the sidewall height of the tyre is 70% of the tyre width (175mm), which results in 122.5mm sidewall height.