Bridgestone Turanza T001 is a summer tyre made in total of 70 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/55 R18 is 40mm wider than the narrowest dimension (185) and 0mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R18, there is only one possible speed index for Bridgestone Turanza T001 - "V", which is good for speeds up to 240 km/h. In 225/55 R18, Turanza T001 usually competes against Cinturato P7, which is a tyre from Pirelli with a rating of 75%, compared to 0% of the Bridgestone in question.
