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 + 0 road tests and 195 + 199 owner reviews. How we score
Primacy 3 leads, 71–68 Narrow edge
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Tests 73 · 2 tests Owners 67 · 195 reviews
Best test result: #3 of 20 in 2017 Auto Bild Summer Tyre Test (wear)
“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.”
Tests – · none yet Owners 68 · 199 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) · 2 / – tests | 74 | ≈ 68 (est.) |
| Reviews found online | 70 | 68 |
Primacy 3: 60% × 74.2 + 40% × 70 = 73
Turanza ER300: 60% × 68.2 (est.) + 40% × 68.3 = 68
No road tests of dry for Turanza ER300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) · 2 / – tests | 72 | ≈ 70 (est.) |
| Reviews found online | 72 | 70 |
Primacy 3: 60% × 71.9 + 40% × 71.9 = 72
Turanza ER300: 60% × 70.1 (est.) + 40% × 69.6 = 70
No road tests of wet for Turanza ER300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) | – | ≈ 68 (est.) |
| Reviews found online | – | 63 |
Turanza ER300: 60% × 67.8 (est.) + 40% × 62.8 = 66
No road tests of snow for Turanza ER300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) | ≈ 69 (est.) | ≈ 68 (est.) |
| Reviews found online | 68 | 63 |
Primacy 3: 40% × 68.9 (est.) + 60% × 67.8 = 68
Turanza ER300: 40% × 67.9 (est.) + 60% × 62.5 = 65
No road tests of comfort for Primacy 3 or Turanza ER300. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) | – | ≈ 67 (est.) |
| Reviews found online | – | 71 |
Turanza ER300: 60% × 66.6 (est.) + 40% × 70.5 = 68
No road tests of noise for Turanza ER300. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 73 | ≈ 67 (est.) |
| Reviews found online | 57 | 70 |
Primacy 3: 60% × 73.1 + 40% × 56.9 = 67
Turanza ER300: 60% × 67.3 (est.) + 40% × 69.5 = 68
No road tests of treadwear for Turanza ER300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
| Source | Primacy 3 | Turanza ER300 |
|---|---|---|
| Reviews found online | 68 | 65 |
| Category | Michelin Primacy 3 | Bridgestone Turanza ER300 |
|---|---|---|
| Relative Score | 71 | 68 |
| Dry | 73 | 68 |
| Wet | 72 | 70 |
| Snow | – | 66 |
| Comfort | 68 | 65 |
| Noise | – | 68 |
| Treadwear | 67 | 68 |
| Handling (owners) | 68 | 65 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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.
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Primacy 3
Turanza ER300
Only categories both tires have data for count toward the headline score.
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.
| Discipline | Category | Primacy 3 | Turanza ER300 | Δ | Head-to-head |
|---|---|---|---|---|---|
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #1/16 2018 ADAC Summer Tyre Test - 205/55 R16 | #2/6 2010 Autocar Tyre Test - FWD | – | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
From Reddit, forums and review threads. Not part of our score
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.
“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.”
“I have Pirellis on my 2014 F31 wagon. I have overinflated them slightly (3 psi front, 2 psi rear) because with the pressures placarded on the door post they are not responsive enough. With the overinflation they make fine street tires . At the limit they are still a bit soft, but the limits are so high that I have no business driving like that on the public highway. Tire Rack, I believe, tested Michelin Primacy 3 ZP (zero pressure, or run-flat all season tires ) and liked them. I have no thoughts about Continentals , so that I am only muddying your waters by adding in the Michelins for consideration.”
“Currently riding on Michelin Primacy 3 ZP run flats that originally came with the car. Have approximately 15k miles on it and Mercedes are already recommending I purchase new rear tires. What other options would you recommend as replacements? I would like all season tires that last much longer but also don't want to compromise the comfort and ride. Front tire: 245/40 R19 Rear tire: 275/35 R19”
Based on 23 community posts
We haven't collected enough community discussion about this tire yet.
| Attribute | A · Michelin Primacy 3 | B · Bridgestone Turanza ER300 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 42 | 23 |
| Rim diameters | 15″ – 20″ | 14″ – 19″ |
| Tread depth | — | 9/32″ |
| UTQG | — | 320 A A |
| Sidewall | — | Blackwall |
| Sizes in common | 15 | 15 |
Michelin Primacy 3
Bridgestone Turanza ER300
Narrow edge: Michelin Primacy 3 — better dry and comfort. Where the Bridgestone Turanza ER300 is ahead, it is by less than 3 points.
Michelin Primacy 3 scores 73 vs 68 on dry.
Michelin Primacy 3 scores 68 vs 65 on comfort.
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Neither, by our numbers: 72 vs 70 on the wet score, within 3 points.
Michelin Primacy 3, 73 vs 68 on our dry score.
Michelin Primacy 3, 68 vs 65 on our comfort score.
Neither, by our numbers: 67 vs 68 on the treadwear score, within 3 points.
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
