Giti Winter W1 235/55 R18

Giti Winter W1 is a tyre made in total of 10 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/55 R18 is 50mm wider than the narrowest dimension (185) and -40mm narrower than the widest one (195). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height.