Apollo Apterra H/T2 is a summer tyre made in total of 13 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/55 R18 is 10mm wider than the narrowest dimension (215) and 30mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In
225/55 R18, Apterra H/T2 usually competes against
ZV7, which is a tyre from
Avon with a rating of 12%, compared to 0% of the
Apollo in question.