Giti Winter W1 225/50 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. 225/50 R18 is 40mm wider than the narrowest dimension (185) and -30mm narrower than the widest one (195). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height.