Tests – · 1 test Owners 56 · 42 reviews
Best test result: #6 of 22 in 2022 Consumer Reports Ultra High Performance Summer Tires (tested tread life (miles))
Toyo Proxes 4 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Sumitomo HTR Z III vs Toyo Proxes 4 — 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 1 + 0 road tests and 42 + 45 owner reviews. How we score
HTR Z III leads, 65–61 Narrow edge
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Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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67
Dry
HTR Z III +562Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) ≈ 68 (est.) ≈ 64 (est.) Reviews found online 67 59 HTR Z III: 60% × 67.6 (est.) + 40% × 67.1 = 67
Proxes 4: 60% × 64.3 (est.) + 40% × 59.1 = 62
No road tests of dry for HTR Z III. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
No road tests of dry for Proxes 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
-
63
Wet
HTR Z III +360Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) ≈ 65 (est.) ≈ 63 (est.) Reviews found online 60 57 HTR Z III: 60% × 64.9 (est.) + 40% × 60.1 = 63
Proxes 4: 60% × 63 (est.) + 40% × 56.6 = 60
No road tests of wet for HTR Z III. 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 Proxes 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
37
Snow
No comparison–Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) ≈ 52 (est.) – Reviews found online 14 – HTR Z III: 60% × 52.5 (est.) + 40% × 14.1 = 37
No road tests of snow for HTR Z III. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
-
66
Comfort
HTR Z III +462Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) ≈ 68 (est.) ≈ 67 (est.) Reviews found online 64 58 HTR Z III: 40% × 67.8 (est.) + 60% × 64.3 = 66
Proxes 4: 40% × 66.6 (est.) + 60% × 58.4 = 62
No road tests of comfort for HTR Z III. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
No road tests of comfort for Proxes 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
-
65
Noise
No comparison–Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) ≈ 66 (est.) – Reviews found online 62 – HTR Z III: 60% × 66.5 (est.) + 40% × 62.3 = 65
No road tests of noise for HTR Z III. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
-
66
Treadwear
HTR Z III +264Why this score
Source HTR Z III Proxes 4 Professional tests (TWG score) · 1 / – tests 70 ≈ 65 (est.) Reviews found online 59 63 HTR Z III: 60% × 70.2 + 40% × 59.1 = 66
Proxes 4: 60% × 65.2 (est.) + 40% × 62.8 = 64
No road tests of treadwear for Proxes 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
-
65
Handling (owners)
HTR Z III +1055Why this score
Source HTR Z III Proxes 4 Reviews found online 65 55
Scores at a glance
| Category | Sumitomo HTR Z III | Toyo Proxes 4 |
|---|---|---|
| Relative Score | 65 | 61 |
| Dry | 67 | 62 |
| Wet | 63 | 60 |
| Snow | 37 | – |
| Comfort | 66 | 62 |
| Noise | 65 | – |
| Treadwear | 66 | 64 |
| Handling (owners) | 65 | 55 |
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
Recomputed
Headline score
65
/ 100
HTR Z III
61
/ 100
Proxes 4
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 HTR Z III
Pros
- Excellent price-to-performance ratio
- Strong dry handling and steering feedback
- Quiet and comfortable ride quality
Cons
- Inconsistent wet-weather side grip during cornering
- Limited traction under heavy acceleration on high-horsepower vehicles
- Not suitable for winter or freezing conditions
Tire B Proxes 4
Pros
- Excellent dry grip and handling
- Low road noise and comfortable ride
- Good treadwear and longevity compared to similar performance tires
Cons
- Poor grip and lack of confidence in wet or damp conditions
- Soft sidewalls leading to a squirmy, flexy feel during hard cornering
- Prone to uneven wear patterns like cupping or increased noise over time
Specs side by side
| Attribute | A · Sumitomo HTR Z III | B · Toyo Proxes 4 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Tread depth | 10/32″ | — |
| UTQG | 300 A A | 300 AA A |
| Sidewall | Blackwall | — |
| Max pressure | 50 psi | — |
Which one should you actually buy?
65
/ 100
Sumitomo HTR Z III
61
/ 100
Toyo Proxes 4
Narrow edge: Sumitomo HTR Z III — better handling, dry and comfort. It leads or ties in every category we score.
Pick tire A
You enjoy sharp, responsive handling
Sumitomo HTR Z III scores 65 vs 55 on handling.
Pick tire A
You want the most grip on dry roads
Sumitomo HTR Z III scores 67 vs 62 on dry.
Pick tire A
You want the most comfortable ride
Sumitomo HTR Z III scores 66 vs 62 on comfort.
Pick tire A
Your priority is wet-weather safety
Sumitomo HTR Z III scores 63 vs 60 on wet.
Tire A · Sumitomo HTR Z III
Tire B · Toyo Proxes 4
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HTR Z III or Proxes 4?
Which is better in the wet, HTR Z III or Proxes 4?
Sumitomo HTR Z III, 63 vs 60 on our wet score.
Which grips better on dry roads, HTR Z III or Proxes 4?
Sumitomo HTR Z III, 67 vs 62 on our dry score.
Which is more comfortable, HTR Z III or Proxes 4?
Sumitomo HTR Z III, 66 vs 62 on our comfort score.
Which lasts longer, HTR Z III or Proxes 4?
Neither, by our numbers: 66 vs 64 on the treadwear score, within 3 points.
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