Imperial Ecodriver 4 is a summer tyre made in total of 68 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 195/60 R15 is 50mm wider than the narrowest dimension (145) and -10mm narrower than the widest one (185). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (195mm), which results in 117mm sidewall height. In 195/60 R15, there are 2 possible speed indexes for Imperial Ecodriver 4 - "H","V", which are good for speeds up to 210, 240 km/h. In 195/60 R15, Ecodriver 4 usually competes against Ventus Prime3 K125, which is a tyre from Hankook with a rating of 75%, compared to 0% of the Imperial in question.