Tests – · none yet Owners – · 1 review (needs 5)
Bridgestone Ecopia EP422 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Riken Raptor HR vs Bridgestone Ecopia EP422 — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 1 + 15 owner reviews. How we score
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests – · none yet Owners 52 · 15 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
–
Dry
No comparison56Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 60 (est.) Reviews found online – 49 Ecopia EP422: 60% × 60.1 (est.) + 40% × 49 = 56
No road tests of dry for Ecopia EP422. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
–
Wet
No comparison58Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 61 (est.) Reviews found online – 54 Ecopia EP422: 60% × 61.3 (est.) + 40% × 53.7 = 58
No road tests of wet for Ecopia EP422. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
–
Snow
No comparison55Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 62 (est.) Reviews found online – 46 Ecopia EP422: 60% × 61.5 (est.) + 40% × 46 = 55
No road tests of snow for Ecopia EP422. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
-
–
Comfort
No comparison54Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 65 (est.) Reviews found online – 46 Ecopia EP422: 40% × 65 (est.) + 60% × 46.4 = 54
No road tests of comfort for Ecopia EP422. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
–
Noise
No comparison63Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 57 Ecopia EP422: 60% × 66.6 (est.) + 40% × 57.2 = 63
No road tests of noise for Ecopia EP422. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
–
Treadwear
No comparison60Why this score
Source Raptor HR Ecopia EP422 Professional tests (TWG score) – ≈ 63 (est.) Reviews found online – 56 Ecopia EP422: 60% × 62.6 (est.) + 40% × 55.9 = 60
No road tests of treadwear for Ecopia EP422. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
Scores at a glance
| Category | Riken Raptor HR | Bridgestone Ecopia EP422 |
|---|---|---|
| Relative Score | – | 57 |
| Dry | – | 56 |
| Wet | – | 58 |
| Snow | – | 55 |
| Comfort | – | 54 |
| Noise | – | 63 |
| Treadwear | – | 60 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Recomputed
Headline score
–
/ 100
Raptor HR
57
/ 100
Ecopia EP422
Only categories both tires have data for count toward the headline score.
Specs side by side
| Attribute | A · Riken Raptor HR | B · Bridgestone Ecopia EP422 |
|---|---|---|
| Category | Grand Touring All-Season | All-Season tire |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 6 |
| Rim diameters | — | 15″ – 17″ |
| Tread depth | — | 10/32″ |
| UTQG | — | 480 A A |
| Treadwear warranty | — | 65,000 mi |
| Sidewall | — | Blackwall |
| Max pressure | — | 51 psi |
Which one should you actually buy?
–
/ 100
Riken Raptor HR
57
/ 100
Bridgestone Ecopia EP422
Only Bridgestone Ecopia EP422 has enough test and review data for a Relative Score, so there is no head-to-head winner yet.
Tire A · Riken Raptor HR
Tire B · Bridgestone Ecopia EP422
TireWheelGuide may earn a commission from purchases made through these links.
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology