Pirelli Night Dragon 180/55 R18

Pirelli Night Dragon is a summer tyre made in total of 13 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (180mm), which results in 99mm sidewall height.