Imperial EcoSport 2 is a summer tyre made in total of 87 sizes, ranging from R15 to R15 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 275/30 R19 is 80mm wider than the narrowest dimension (195) and -20mm narrower than the widest one (255). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height. In 275/30 R19, there is only one possible speed index for Imperial EcoSport 2 - "Y", which is good for speeds up to 300 km/h.