Nexen WinGuard Sport 255/40 R19

Nexen WinGuard Sport is a winter tyre made in total of 48 sizes, ranging from R15 to R15 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/40 R19 is 70mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height.