P45 of 52
Beat 14% of the field
Riken UHP Test Results
Tested 2023 to 2025
1 publication
Tested 2 times by independent publications, the Riken UHP averages a finish of 42nd.
- 2Independent tests
- 0Test wins
- 0Podium finishes
- 42ndAverage finish
- 18%Field beaten on average
- 1Publications
2 tests, 2023 to 2025
Record by discipline
Where the Riken UHP finished in each measured discipline, across every test that measured it against at least two other tires. Field beaten is the share of the other tires it outranked in that measurement.
| Discipline | Tests | Avg finish | Field beaten | Firsts |
|---|---|---|---|---|
| Dry | ||||
| Dry Braking | 2 | P29.5 of 50 | 42% | - |
| Wet | ||||
| Wet Braking | 2 | P44.5 of 50 | 11% | - |
Performance Analysis
Drawn from 2 tests. Updated October 29, 2026.
The Riken Riken UHP had long wet stopping distances in both Auto Bild summer braking comparisons. In 2025 it finished 45th of 52 overall, with wet braking 46th of 52 at 37.5 m, 36.9% longer than the shortest stop. The 2023 comparison placed it 38th of 50 overall, with wet braking 43rd of 48 at 33.1 m, a 33.5% deficit. The repeated gap of roughly a third to the best makes wet braking the clearest weakness.
Dry braking was less far behind but still below the middle of each field: 31st of 52 in 2025 at 36.9 m, 13.2% longer than the best, and 28th of 48 in 2023 at 36.2 m, a 9% deficit. There is no standout measured strength in these results. Both comparisons cover braking rather than a full handling, comfort or wear assessment, so the weak overall placings should not be used to infer performance in those other areas.
Performance Weaknesses
-
Wet braking
Moderate
Details
- 2025 Auto Bild: 46th of 52, 37.5 m, 36.9% longer than the shortest stop.
- 2023 Auto Bild: 43rd of 48, 33.1 m, 33.5% longer than the shortest stop.
-
Dry braking
Moderate
Details
- 2025 Auto Bild: 31st of 52, 36.9 m, 13.2% longer than the best.
- 2023 Auto Bild: 28th of 48, 36.2 m, 9% longer than the best.
Every test, newest first 2
Strong = top two of the field in that measurement. Weak = bottom two.
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