Dunlop D407 200/50 R18

Dunlop D407 is a allround tyre made in total of 15 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 200/50 R18 is 20mm wider than the narrowest dimension (180) and 40mm narrower than the widest one (240). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (200mm), which results in 100mm sidewall height.