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Michelin Primacy 3 vs Bridgestone Turanza ER300 — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Primacy 3 leads, 70–67 Narrow edge

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Tire AMichelin

Primacy 3

Summer

Tests 73 · 2 tests Owners 67 · 195 reviews

Best test result: #14 of 44 in 2012 Autobild 50 Tyre Braking Test (overall ranking)

“By far the biggest determinant in road noise will be the road surface, as you found, and no tire will overcome that basic fact. That is so obvious in my area where there are new sections of highway interspersed with old sections. Having said that, I'm running the older Michelin Primacy 3 ST tires on 17 inch wheels on my 2021 ES300h and they are great, compared to the Turanza I was running on 19 inch wheels on the same car. The Michelin Primacy Tour A/S should be even better in this regard. Not sure, but perhaps the higher profile of the 17 inch tires (215/55R17 vs 235/40R19) also helps reduce road noise.”

Tire BBridgestone

Turanza ER300

Summer

Tests – · none yet Owners 66 · 199 reviews

Best test result: #2 of 6 in 2010 Autocar Tyre Test - FWD (overall ranking)

Category by category

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

  1. 72

    Dry

    Primacy 3 +5
    67
    Why this score
    SourcePrimacy 3Turanza ER300
    Professional tests (TWG score)74–
    Reviews found online6967
  2. 72

    Wet

    Primacy 3 +3
    69
    Why this score
    SourcePrimacy 3Turanza ER300
    Professional tests (TWG score)72–
    Reviews found online7169
  3. –

    Snow

    No comparison
    65
    Why this score
    SourcePrimacy 3Turanza ER300
    Reviews found online–62
  4. 69

    Comfort

    Primacy 3 +3
    66
    Why this score
    SourcePrimacy 3Turanza ER300
    Reviews found online6863
  5. –

    Noise

    No comparison
    68
    Why this score
    SourcePrimacy 3Turanza ER300
    Reviews found online–70
  6. 67

    Treadwear

    Primacy 3 +1
    66
    Why this score
    SourcePrimacy 3Turanza ER300
    Professional tests (TWG score)72–
    Reviews found online5967
  7. 68

    Handling

    Primacy 3 +3
    65
    Why this score
    SourcePrimacy 3Turanza ER300
    Reviews found online6865
Scores at a glance
CategoryMichelin Primacy 3Bridgestone Turanza ER300
Relative Score 70 67
Dry 72 67
Wet 72 69
Snow – 65
Comfort 69 66
Noise – 68
Treadwear 67 66
Handling 68 65

Higher is better. The Relative Score follows your weights below; category scores do not change.

Weight the categories that matter to you

Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

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Neutral
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Neither tire has a score here yet, so this weight changes nothing.

Less important
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Less important
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Recomputed
Headline score

Primacy 3

Turanza ER300

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

The professional test results behind the scores

Each result is shown as % of the best tire in that test. “Same test” rows are the strictest comparison: both tires were measured side by side.

DisciplineCategoryPrimacy 3Turanza ER300ΔBoth?
Overall Ranking Overall 7% #14/44 · 2012 Autobild 50 Tyre Braking Test 50% #2/6 · 2010 Autocar Tyre Test - FWD −42.9 Different tests

Pros, cons & observations

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

Tire A Primacy 3

Pros

  • Exceptional ride comfort and low noise levels
  • Strong dry grip and confident handling
  • Smooth, refined high-speed stability and cruising capability

Cons

  • Higher than average purchase price
  • Faster-than-expected tread wear reported by many users
  • Mixed feedback on wet weather performance, with some noting a lack of grip in standing water or snow
All owner themes in the Primacy 3 review

Tire B Turanza ER300

Pros

  • Exceptional tread life and longevity
  • Reliable dry and wet grip when relatively new
  • Stable, predictable highway handling and straight-line tracking

Cons

  • High road noise and noticeable tire roar, especially on coarser asphalt
  • Firm, sometimes harsh ride quality with stiff sidewalls
  • Deterioration of wet grip and increased ABS/TCS activation as the tread wears down
All owner themes in the Turanza ER300 review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Michelin Primacy 3

Mixed

Community members generally view the Michelin Primacy 3 as a quiet, smooth, and capable grand touring tire, with several users highlighting the run-flat (ZP) version as superior in comfort to competing run-flats. However, some drivers report fast tread wear, a harsh ride compared to standard non-run-flat alternatives, and note that the model is older and increasingly replaced by newer generations like the Primacy 4.

bobistheoilguy.com ·2022-10-13

“Is your tire size 235/55-18? You might like the Michelin Primacy 3 which is actually a good price for an 18" Michelin. They are summer tires, but that's OK if you have separate winter tires. The Goodyear Assurance Maxlife sounds like something that will last a long time. The Cooper Enduramax is good if you drive over potholes and curbs because it's supposed to be tougher”
teslamotorsclub.com ·2018-12-11

“I have just put a new set of Michelin Primacy 3 T0 Acoustics on and they have been faultless. Lots of grip, very quiet etc. They were also good last year in the snow and were from blackcircles for about £240 a tyre.”
r/BMWi3 ·7 upvotes ·2022-04-22

“So I have decided there is no way I am paying for the Bridgestone Ecopias at over £200 a tyre, and as such, I have come across the Michelin Primacy 3 on Costco, which I can get fitted for approx £93 a tyre (I only need two on the rear) They seem to have good reviews. My actual tyre size for my i3S should be 195/50 R20, but getting 195/55 R20 instead should only add up to another inch or so in height, so I'm reckoning I should be okay. What are people's thoughts?”
Top themes
#Run-flat ride quality#Tread wear and longevity#Touring comfort and low noise#Model obsolescence and replacements#OE fitment and regional availability#Price and size compatibility

Based on 23 community posts

Tire B

Bridgestone Turanza ER300

We haven't collected enough community discussion about this tire yet.

Specs side by side

Attribute A · Michelin Primacy 3 B · Bridgestone Turanza ER300
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available4223
Rim diameters15″ – 20″14″ – 19″
Tread depth—9/32″
UTQG—320 A A
Sidewall—Blackwall

Which one should you actually buy?

Michelin Primacy 3

Bridgestone Turanza ER300

Winner: Michelin Primacy 3 — better dry, wet and comfort. It leads or ties in every category we score.

Pick tire A You want the most grip on dry roads

Michelin Primacy 3 scores 72 vs 67 on dry.

Pick tire A Your priority is wet-weather safety

Michelin Primacy 3 scores 72 vs 69 on wet.

Pick tire A You want the most comfortable ride

Michelin Primacy 3 scores 69 vs 66 on comfort.

Pick tire A You enjoy sharp, responsive handling

Michelin Primacy 3 scores 68 vs 65 on handling.

Tire A · Michelin Primacy 3
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Tire B · Bridgestone Turanza ER300
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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.

Community buzz from Reddit and forums is shown for context only — it never changes the score.

70

Narrow edge

Primacy 3

Amazon