275/40 R18 Bridgestone Potenza RE040 variants
Bridgestone Potenza RE040 is a summer tyre made in total of 8 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 275/40 R18 is 70mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height. In 275/40 R18, there is only one possible speed index for Bridgestone Potenza RE040 - "W", which is good for speeds up to 270 km/h.
275/40 R18 99 W runflat rft *
Bridgestone Potenza RE040 is made in 8 sizes, starting from 205/55 R16 up to 275/40 R18.