GoodYear Eagle F1 Supersport R 305/30 R19

GoodYear Eagle F1 Supersport R is a summer tyre made in total of 22 sizes, ranging from R18 to R18 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 305/30 R19 is 100mm wider than the narrowest dimension (205) and 30mm narrower than the widest one (335). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (305mm), which results in 91.5mm sidewall height.