225/45 R18 Riken Ultra High Performance variants
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. 225/45 R18 is 20mm wider than the narrowest dimension (205) and -30mm narrower than the widest one (195). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In 225/45 R18, there are 2 possible speed indexes for Riken Ultra High Performance - "W","Y", which are good for speeds up to 270, 300 km/h.
225/45 R18 95 W
225/45 R18 95 Y
Riken Ultra High Performance is made in 55 sizes, starting from 205/40 R17 up to 195/55 R20.
Riken Ultra High Performance in tyre tests
Relevant tyre tests in same or similiar dimension (225/45 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 | |||||||
