Dunlop Winter Sport 5 is a winter tyre made in total of 119 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 295/35 R21 is 100mm wider than the narrowest dimension (195) and 0mm narrower than the widest one (295). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (295mm), which results in 103.25mm sidewall height. In 295/35 R21, there is only one possible speed index for Dunlop Winter Sport 5 - "V", which is good for speeds up to 240 km/h.