Apollo Aspire 4G 245/50 R18

Apollo Aspire 4G is a summer tyre made in total of 27 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/50 R18 is 40mm wider than the narrowest dimension (205) and 10mm narrower than the widest one (255). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (245mm), which results in 122.5mm sidewall height.