Summer tire summer Updated September 2026
Riken Riken UHP review
Riken Riken UHP is a summer.
This tire appears to be discontinued and may no longer be available.
Relative score
37/100
tests + owners
Road tests
52/100
2 published tests
Scores
Two scoring systems, side by side
Owner scores come from reviews on retailer and review sites; road-test scores come from instrumented tests. Where they disagree, it is usually a discipline owners rarely push to the limit.
By road tests
52.2%Test results
2 published test appearances
Placement within each field. Open a test for the discipline-by-discipline result.
2025 Summer tire Test Shootout · 225/40 R18
45th of 52
Best: Dry Braking · 32nd
Weakest: Wet Braking · 46th
| Discipline | Placement | Field position |
|---|---|---|
| Wet Braking | 46th of 52 | |
| Dry Braking | 32nd of 52 |
2023 Summer tire Market Overview · 225/45 R18
38th of 48
Best: Dry Braking · 28th
Weakest: Wet Braking · 44th
| Discipline | Placement | Field position |
|---|---|---|
| Wet Braking | 44th of 48 | |
| Dry Braking | 28th of 48 |