Apollo Amazer 4G ECO is a summer tyre made in total of 23 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/65 R15 is 40mm wider than the narrowest dimension (145) and 10mm narrower than the widest one (195). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (185mm), which results in 120.25mm sidewall height. In 185/65 R15, there is only one possible speed index for Apollo Amazer 4G ECO - "T", which is good for speeds up to 190 km/h. In 185/65 R15, Amazer 4G ECO usually competes against Snowpower HP, which is a tyre from Tristar with a rating of 0%, compared to 0% of the Apollo in question.