Bridgestone Exedra G852 is a summer tyre made in total of 4 sizes, ranging from R16 to R16 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 240/55 R16 is 40mm wider than the narrowest dimension (200) and -30mm narrower than the widest one (210). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (240mm), which results in 132mm sidewall height. In 240/55 R16, there is only one possible speed index for Bridgestone Exedra G852 - "V", which is good for speeds up to 240 km/h.