Bridgestone Turanza ER300 is a summer tyre made in total of 59 sizes, ranging from R14 to R14 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 215/55 R16 is 30mm wider than the narrowest dimension (185) and 60mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (215mm), which results in 118.25mm sidewall height. In 215/55 R16, there are 4 possible speed indexes for Bridgestone Turanza ER300 - "H","V","W","Y", which are good for speeds up to 210, 240, 270, 300 km/h.
