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Head-to-head Updated

Bridgestone Potenza Sport AS vs Michelin Primacy MXM4 — 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 2 + 1 road tests and 82 + 10 owner reviews. How we score

Potenza Sport AS is ahead, 67–62

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Bridgestone Potenza Sport AS
Tire ABridgestone

Potenza Sport AS

All Season

± 7

Tests 62 · 2 tests Owners 72 · 82 reviews

Best test result: #1 of 9 in 2024 Tire Rack UHP All Season Tyre Test (snow handling)

Michelin Primacy MXM4
Tire BMichelin

Primacy MXM4

All Season

± 7Provisional

Tests 72 · 1 test Owners 54 · 10 reviews

Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 63

    Dry

    Primacy MXM4 +10
    73
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · 2 / 1 tests5487
    Reviews found online7851

    Potenza Sport AS: 60% × 53.6 + 40% × 77.9 = 63

    Primacy MXM4: 60% × 87.2 + 40% × 51.1 = 73

  2. 63

    Wet

    Potenza Sport AS +6
    57
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · 2 / 1 tests5357
    Reviews found online7857

    Potenza Sport AS: 60% × 53 + 40% × 78.1 = 63

    Primacy MXM4: 60% × 56.7 + 40% × 57.2 = 57

  3. 76

    Snow

    Potenza Sport AS +19
    57
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · 1 / – tests88≈ 63 (est.)
    Reviews found online5747

    Potenza Sport AS: 60% × 87.8 + 40% × 57.4 = 76

    Primacy MXM4: 60% × 63.1 (est.) + 40% × 47.3 = 57

    No road tests of snow for Primacy MXM4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 67

    Comfort

    Potenza Sport AS +13
    54
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · 2 / 1 tests6463
    Reviews found online6948

    Potenza Sport AS: 40% × 63.9 + 60% × 68.6 = 67

    Primacy MXM4: 40% × 63.5 + 60% × 47.5 = 54

  5. 66

    Noise

    Primacy MXM4 +9
    75
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · 2 / 1 tests6681
    Reviews found online≈ 66 (est.)≈ 66 (est.)

    Potenza Sport AS: 60% × 65.9 + 40% × 66.5 (est.) = 66

    Primacy MXM4: 60% × 81.2 + 40% × 66.5 (est.) = 75

    No owner ratings of noise for Potenza Sport AS or Primacy MXM4. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  6. 69

    Treadwear

    Potenza Sport AS +7
    62
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score)≈ 68 (est.)≈ 64 (est.)
    Reviews found online7059

    Potenza Sport AS: 60% × 67.9 (est.) + 40% × 70.2 = 69

    Primacy MXM4: 60% × 64 (est.) + 40% × 59.3 = 62

    No road tests of treadwear for Potenza Sport AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for Primacy MXM4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 71

    Handling (owners)

    Potenza Sport AS +22
    49
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Reviews found online7149
  8. –

    Efficiency

    No comparison
    55
    Why this score
    SourcePotenza Sport ASPrimacy MXM4
    Professional tests (TWG score) · – / 1 tests–55
Scores at a glance
CategoryBridgestone Potenza Sport ASMichelin Primacy MXM4
Relative Score 67 62
Dry 63 73
Wet 63 57
Snow 76 57
Comfort 67 54
Noise 66 75
Treadwear 69 62
Handling (owners) 71 49
Efficiency – 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
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Not 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
± 7

Potenza Sport AS

± 7

Primacy MXM4

Only categories both tires have data for count toward the headline score.

The professional test results behind the scores

Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.

DisciplineCategoryPotenza Sport ASPrimacy MXM4ΔHead-to-head
Dry Handling Dry 98% #8/9 · 2024 Tire Rack UHP All Season Tyre Test 100% #1/3 · 2024 AutoView All-Season Tire Test R18 – Different tests
Dry Handling (tester's mark) Dry 81% #8/9 · 2024 Tire Rack UHP All Season Tyre Test 88% #3/3 · 2024 AutoView All-Season Tire Test R18 – Different tests
Wet Braking Wet 89% #8/9 · 2024 Tire Rack UHP All Season Tyre Test 88% #3/3 · 2024 AutoView All-Season Tire Test R18 – Different tests
Wet Handling (tester's mark) Wet 84% #8/9 · 2024 Tire Rack UHP All Season Tyre Test 88% #3/3 · 2024 AutoView All-Season Tire Test R18 – Different tests
Comfort (tester's mark) Comfort 97% #2/9 · 2024 Tire Rack UHP All Season Tyre Test 70% #4/3 · 2024 AutoView All-Season Tire Test R18 – Different tests
Also published by the testers (not in the score)
Overall Ranking Overall #8/9 2024 Tire Rack UHP All Season Tyre Test #4/3 2024 AutoView All-Season Tire Test R18 – Different tests

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Potenza Sport AS

Pros

  • Exceptional steering response, precision, and talkative feedback
  • Strong grip and traction in both dry and wet conditions
  • Sporty handling characteristics that rival summer tires

Cons

  • Noticeable increase in road noise and cabin vibration, especially on rough pavement
  • Reduced fuel economy due to higher rolling resistance
  • Firmer, harsher low-speed ride quality
All owner themes in the Potenza Sport AS review

Tire B Primacy MXM4

Pros

  • Exceptional ride comfort and vibration dampening
  • Strong tread life and durability
  • High fuel efficiency

Cons

  • Mediocre dry grip and handling precision
  • Noticeable understeer when cornering
  • Soft sidewalls that lack steering feedback
All owner themes in the Primacy MXM4 review

Specs side by side

Attribute A · Bridgestone Potenza Sport AS B · Michelin Primacy MXM4
CategoryAll SeasonAll Season
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available672
Rim diameters16″ – 22″18″
Tread depth10/32″—
UTQG500 A A—
Treadwear warranty50,000 mi—
SidewallBlackwall—
Max pressure50 psi—

Which one should you actually buy?

Bridgestone Potenza Sport AS

Michelin Primacy MXM4

Winner: Bridgestone Potenza Sport AS — better handling, snow and comfort. Pick the Michelin Primacy MXM4 if dry and noise matter most to you. Michelin Primacy MXM4 rests on little evidence so far (1 test, 10 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Bridgestone Potenza Sport AS scores 71 vs 49 on handling.

Pick tire A You drive through snowy winters

Bridgestone Potenza Sport AS scores 76 vs 57 on snow.

Pick tire A You want the most comfortable ride

Bridgestone Potenza Sport AS scores 67 vs 54 on comfort.

Pick tire B You want the most grip on dry roads

Michelin Primacy MXM4 scores 73 vs 63 on dry.

Tire A · Bridgestone Potenza Sport AS
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Tire B · Michelin Primacy MXM4
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Potenza Sport AS or Primacy MXM4?

Which is better in the wet, Potenza Sport AS or Primacy MXM4?

Bridgestone Potenza Sport AS, 63 vs 57 on our wet score.

Which grips better on dry roads, Potenza Sport AS or Primacy MXM4?

Michelin Primacy MXM4, 73 vs 63 on our dry score.

Which is better in snow, Potenza Sport AS or Primacy MXM4?

Bridgestone Potenza Sport AS, 76 vs 57 on our snow score.

Which is quieter, Potenza Sport AS or Primacy MXM4?

Michelin Primacy MXM4, 75 vs 66 on our noise score.

Which is more comfortable, Potenza Sport AS or Primacy MXM4?

Bridgestone Potenza Sport AS, 67 vs 54 on our comfort score.

Which lasts longer, Potenza Sport AS or Primacy MXM4?

Bridgestone Potenza Sport AS, 69 vs 62 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