Kleber Quadraxer 3 is a allround tyre made in total of 104 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/40 R17 is 40mm wider than the narrowest dimension (165) and -10mm narrower than the widest one (195). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (205mm), which results in 82mm sidewall height. In 205/40 R17, there is only one possible speed index for Kleber Quadraxer 3 - "W", which is good for speeds up to 270 km/h.