Tests – · none yet Owners 62 · 41 reviews
Head-to-head
Updated
Bridgestone Ecopia H/L 422 Plus vs Pirelli P Zero Run Flat — 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 41 + 52 owner reviews. How we score
Ecopia H/L 422 Plus is ahead, 64–57
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 48 · 52 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
63
Dry
Ecopia H/L 422 Plus +261Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 65 (est.) ≈ 63 (est.) Reviews found online 61 57 Ecopia H/L 422 Plus: 60% × 64.9 (est.) + 40% × 60.6 = 63
P Zero Run Flat: 60% × 63.4 (est.) + 40% × 56.9 = 61
No road tests of dry for Ecopia H/L 422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
No road tests of dry for P Zero Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
68
Wet
Ecopia H/L 422 Plus +761Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 68 (est.) ≈ 63 (est.) Reviews found online 67 57 Ecopia H/L 422 Plus: 60% × 68.5 (est.) + 40% × 66.6 = 68
P Zero Run Flat: 60% × 63.1 (est.) + 40% × 56.9 = 61
No road tests of wet for Ecopia H/L 422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
No road tests of wet for P Zero Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
69
Snow
No comparison–Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 69 (est.) – Reviews found online 67 – Ecopia H/L 422 Plus: 60% × 69.4 (est.) + 40% × 67.2 = 69
No road tests of snow for Ecopia H/L 422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
-
62
Comfort
Ecopia H/L 422 Plus +1250Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 67 (est.) ≈ 64 (est.) Reviews found online 59 40 Ecopia H/L 422 Plus: 40% × 67.3 (est.) + 60% × 59.2 = 62
P Zero Run Flat: 40% × 63.8 (est.) + 60% × 40 = 50
No road tests of comfort for Ecopia H/L 422 Plus or P Zero Run Flat. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
64
Noise
No comparison–Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 60 – Ecopia H/L 422 Plus: 60% × 66.6 (est.) + 40% × 59.9 = 64
No road tests of noise for Ecopia H/L 422 Plus. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
61
Treadwear
Ecopia H/L 422 Plus +1744Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Professional tests (TWG score) ≈ 63 (est.) ≈ 53 (est.) Reviews found online 58 29 Ecopia H/L 422 Plus: 60% × 63.1 (est.) + 40% × 57.5 = 61
P Zero Run Flat: 60% × 53.2 (est.) + 40% × 29.4 = 44
No road tests of treadwear for Ecopia H/L 422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
No road tests of treadwear for P Zero Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
–
Handling (owners)
No comparison54Why this score
Source Ecopia H/L 422 Plus P Zero Run Flat Reviews found online – 54
Scores at a glance
| Category | Bridgestone Ecopia H/L 422 Plus | Pirelli P Zero Run Flat |
|---|---|---|
| Relative Score | 64 | 57 |
| Dry | 63 | 61 |
| Wet | 68 | 61 |
| Snow | 69 | – |
| Comfort | 62 | 50 |
| Noise | 64 | – |
| Treadwear | 61 | 44 |
| Handling (owners) | – | 54 |
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
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
64
/ 100
Ecopia H/L 422 Plus
57
/ 100
P Zero Run Flat
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Ecopia H/L 422 Plus
Not enough owner reviews yet to extract themes.
Tire B P Zero Run Flat
Pros
- Exceptional dry grip and precise, telepathic steering feedback
- Better ride comfort and compliance than competing run-flat tires
- Good initial value and professional purchase/installation experience
Cons
- Noticeably diminished grip and unsettling behavior on wet roads or standing water
- Rapid tread wear and short lifespan, particularly on rear axles
- Stiff sidewalls prone to bubbling, cuts, and blowouts upon pothole impact
Specs side by side
| Attribute | A · Bridgestone Ecopia H/L 422 Plus | B · Pirelli P Zero Run Flat |
|---|---|---|
| Category | All-Season tire | Summer |
| Vehicle type | SUV and 4x4 | Passenger Car / Crossover |
| Sizes available | 19 | — |
| Rim diameters | 15″ – 20″ | — |
| Tread depth | 9/32″ | — |
| UTQG | 600 A A | — |
| Sidewall | Blackwall | — |
| Max pressure | 51 psi | — |
Which one should you actually buy?
64
/ 100
Bridgestone Ecopia H/L 422 Plus
57
/ 100
Pirelli P Zero Run Flat
Winner: Bridgestone Ecopia H/L 422 Plus — better treadwear, comfort and wet. It leads or ties in every category we score.
Pick tire A
You want the longest tread life
Bridgestone Ecopia H/L 422 Plus scores 61 vs 44 on treadwear.
Pick tire A
You want the most comfortable ride
Bridgestone Ecopia H/L 422 Plus scores 62 vs 50 on comfort.
Pick tire A
Your priority is wet-weather safety
Bridgestone Ecopia H/L 422 Plus scores 68 vs 61 on wet.
Tire A · Bridgestone Ecopia H/L 422 Plus
Tire B · Pirelli P Zero Run Flat
TireWheelGuide may earn a commission from purchases made through these links.
Ecopia H/L 422 Plus or P Zero Run Flat?
Which is better in the wet, Ecopia H/L 422 Plus or P Zero Run Flat?
Bridgestone Ecopia H/L 422 Plus, 68 vs 61 on our wet score.
Which grips better on dry roads, Ecopia H/L 422 Plus or P Zero Run Flat?
Neither, by our numbers: 63 vs 61 on the dry score, within 3 points.
Which is more comfortable, Ecopia H/L 422 Plus or P Zero Run Flat?
Bridgestone Ecopia H/L 422 Plus, 62 vs 50 on our comfort score.
Which lasts longer, Ecopia H/L 422 Plus or P Zero Run Flat?
Bridgestone Ecopia H/L 422 Plus, 61 vs 44 on our treadwear score.
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