Riken Ultra High Performance is a tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/55 R18 is 30mm wider than the narrowest dimension (205) and -40mm narrower than the widest one (195). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height. In 235/55 R18, there is only one possible speed index for Riken Ultra High Performance - "V", which is good for speeds up to 240 km/h.
Relevant tyre tests in same or similiar dimension (235/55 R18)
Name | Stopping distance on dry | Stopping distance on wet | |||||
---|---|---|---|---|---|---|---|
Best values in test | 58.1 | 24.8 | |||||
Riken Ultra High Performance | 70.4 | 33.1 | |||||
Show test details |