Avon ZX7 245/45 R19

Avon ZX7 is a summer tyre made in total of 41 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 245/45 R19 is 30mm wider than the narrowest dimension (215) and 50mm narrower than the widest one (295). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height.