Petlas Snowmaster W651 245/50 R18

Petlas Snowmaster W651 is a winter tyre made in total of 28 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/50 R18 is 60mm wider than the narrowest dimension (185) and 0mm narrower than the widest one (245). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (245mm), which results in 122.5mm sidewall height.