Imperial Snowdragon 2 is a winter tyre made in total of 33 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 205/65 R15 is 40mm wider than the narrowest dimension (165) and 10mm narrower than the widest one (215). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (205mm), which results in 133.25mm sidewall height. In 205/65 R15, there is only one possible speed index for Imperial Snowdragon 2 - "T", which is good for speeds up to 190 km/h. In 205/65 R15, Snowdragon 2 usually competes against UltraGrip 9, which is a tyre from Goodyear with a rating of %, compared to 0% of the Imperial in question.