Bridgestone Dueler A/T 001 is a winter tyre made in total of 28 sizes, ranging from R15 to R15 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 265/75 R16 is 70mm wider than the narrowest dimension (195) and -10mm narrower than the widest one (255). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (265mm), which results in 198.75mm sidewall height. In 265/75 R16, there is only one possible speed index for Bridgestone Dueler A/T 001 - "S", which is good for speeds up to 180 km/h.