Bridgestone Potenza RE050A 305/30 R19

Bridgestone Potenza RE050A is a summer tyre made in total of 109 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 305/30 R19 is 130mm wider than the narrowest dimension (175) and 0mm narrower than the widest one (305). 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.