Summer tire handling Updated October 2026

Riken UHP review

Name: Riken UHP
Brand: Riken

± 7

Relative score 60% tests + 40% owners

Better than 26% of the summer tires we score.

Owners 58 · 18 reviews analysed Road tests 50 · 2 tests

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Riken UHP has a Relative Score of 56 out of 100 among summer tires. In 2 road tests with an overall ranking it finished first 0 times and in the top three 0 times. Testers rate it best for dry (64) and weakest for wet (36). 18 owner reviews rate it 58 out of 100. 56% would buy it again.

Weak point: Wet 36 — 44th of 48 (2023 Summer tire Market Overview), 46th of 52 (2025 Summer tire Test Shootout)

Two scoring systems, side by side

Owner scores come from reviews found online; road-test scores come from instrumented tests. Where they disagree, it is usually a discipline owners rarely push to the limit.

How scores work

Relative score: 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, the missing half is estimated from it, so the score stays closer to average. It needs at least one road test or five owner reviews.
Road tests: 0–100 per score, from published tests, newer tests counting more. Each result is compared with every other tire in the same test, so a win against a strong field counts for more. The average tested tire gets 70, the best 100; with only one or two tests a tire stays nearer 70. The discipline rows show % of the best tire in that test.
Owner reviews: 0–100 from the owner reviews we found online, adjusted for how generously each site rates and scaled like the road tests: the average tested tire gets 70. With only a few reviews a tire stays near the average.

Full methodology

By owner reviews

58/100

From 18 owner reviews analysed, scaled like the road tests: the average tested tire gets 70.

Would buy again 56%

Dry

Overall dry

Wet

Overall wet

Comfort

Overall comfort

Treadwear

Overall treadwear

Handling

Overall handling

Own these tires? Write a review →

By road tests

50/100

Scaled across every tested tire: the average gets 70, the best 100.

Dry

Wet

What owners like and dislike

Themes extracted from 18 owner reviews found online.

The Riken UHP is widely regarded as a high-value budget tire that offers impressive dry and wet grip for its price point, often drawing comparisons to premium brands. However, user experiences are polarized, with significant concerns regarding long-term durability and a notable vulnerability to sidewall damage from road hazards.

Pros

Exceptional price-to-performance value
Strong dry road traction and handling
Competent wet weather performance for the price
Generally low noise levels and comfortable ride quality

Cons

Highly susceptible to sidewall bulges and damage from potholes
Inconsistent performance as tread depth decreases
Reports of unpredictable handling in wet conditions by some users
Concerns regarding overall material quality and longevity

Worth knowing

Users with heavier vehicles, such as the BMW E38, reported high satisfaction with grip levels during highway driving.
Drivers with low-profile tire setups noted that while the soft sidewall improves comfort, it significantly increases the risk of structural damage on poor road surfaces.

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

Source: Auto Bild

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