Nankang Comfort ECO-2+ is a tyre made in total of 26 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 245/45 R19 is 80mm wider than the narrowest dimension (165) and 0mm narrower than the widest one (245). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height. In 245/45 R19, there is only one possible speed index for Nankang Comfort ECO-2+ - "", which is good for speeds up to km/h.