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255/40 R21 Kumho WinterCraft WP52 variants
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Kumho WinterCraft WP52 is a winter tyre made in total of 127 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 100mm wider than the narrowest dimension (155) and 0mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R21, there is only one possible speed index for Kumho WinterCraft WP52 - "V", which is good for speeds up to 240 km/h.
Kumho WinterCraft WP52 is made in 127 sizes, starting from 155/70 R13 up to 255/40 R21.
