255/40 R21 Continental EcoContact 6 Q variants
Continental EcoContact 6 Q is a summer tyre made in total of 64 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 60mm wider than the narrowest dimension (195) and 10mm narrower than the widest one (265). 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 are 2 possible speed indexes for Continental EcoContact 6 Q - "T","H", which are good for speeds up to 190, 210 km/h.
255/40 R21 102 T
Continental EcoContact 6 Q is made in 64 sizes, starting from 195/55 R16 up to 265/40 R22.