Tests – · none yet Owners 49 · 12 reviews
Head-to-head
Updated
Bridgestone Turanza ER300 RFT vs Michelin Primacy 3 — 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 + 2 road tests and 12 + 196 owner reviews. How we score
Primacy 3 is ahead, 70–55
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Tests 73 · 2 tests Owners 66 · 196 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.”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
52
Dry
Primacy 3 +2072Why this score
Source Turanza ER300 RFT Primacy 3 Professional tests (TWG score) · – / 2 tests ≈ 58 (est.) 74 Reviews found online 44 70 Turanza ER300 RFT: 60% × 58.1 (est.) + 40% × 44 = 52
Primacy 3: 60% × 74.3 + 40% × 69.5 = 72
No road tests of dry for Turanza ER300 RFT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
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57
Wet
Primacy 3 +1572Why this score
Source Turanza ER300 RFT Primacy 3 Professional tests (TWG score) · – / 2 tests ≈ 60 (est.) 72 Reviews found online 51 72 Turanza ER300 RFT: 60% × 60.1 (est.) + 40% × 51.2 = 57
Primacy 3: 60% × 71.9 + 40% × 71.8 = 72
No road tests of wet for Turanza ER300 RFT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
54
Comfort
Primacy 3 +1468Why this score
Source Turanza ER300 RFT Primacy 3 Professional tests (TWG score) ≈ 64 (est.) ≈ 68 (est.) Reviews found online 47 67 Turanza ER300 RFT: 40% × 64.4 (est.) + 60% × 47.2 = 54
Primacy 3: 40% × 68.4 (est.) + 60% × 67.3 = 68
No road tests of comfort for Turanza ER300 RFT. 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 Primacy 3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
-
57
Treadwear
Primacy 3 +1067Why this score
Source Turanza ER300 RFT Primacy 3 Professional tests (TWG score) · – / 1 tests ≈ 61 (est.) 73 Reviews found online 51 57 Turanza ER300 RFT: 60% × 61 (est.) + 40% × 51 = 57
Primacy 3: 60% × 73.1 + 40% × 57.1 = 67
No road tests of treadwear for Turanza ER300 RFT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
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51
Handling (owners)
Primacy 3 +1768Why this score
Source Turanza ER300 RFT Primacy 3 Reviews found online 51 68
Scores at a glance
| Category | Bridgestone Turanza ER300 RFT | Michelin Primacy 3 |
|---|---|---|
| Relative Score | 55 | 70 |
| Dry | 52 | 72 |
| Wet | 57 | 72 |
| Comfort | 54 | 68 |
| Treadwear | 57 | 67 |
| Handling (owners) | 51 | 68 |
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
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
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Recomputed
Headline score
55
/ 100
Turanza ER300 RFT
70
/ 100
Primacy 3
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Turanza ER300 RFT
Pros
- Decent dry grip and acceptable comfort for a run-flat tire
- Impressive tread life and mileage reported by highway and long-distance drivers
- Reliable OEM fitment integration for compatible vehicles like BMW models
Cons
- Subpar or near-zero grip in wet conditions, frequently causing traction control activation
- Harsh and noisy ride quality typical of the run-flat construction
- Rapid tread wear reported by some drivers on mixed roads
Tire B 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
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Bridgestone Turanza ER300 RFT
We haven't collected enough community discussion about this tire yet.
Tire B
Mixed
Michelin Primacy 3
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.
teslamotorsclub.com
·2021-04-26
“I've got a similar issue with my rear-left having nearly 0.9 mm less central tread than the others, all at same pressure from cold. Suspect it's just due to the way sunlight falls on the car where I park it, warming up that corner over time just enough to raise its pressure before every trip. Either that or a quality issue with the manufacturer custom-made T0 from Michelin (Primacy 3 in my case).”
mbworld.org
“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”
bobistheoilguy.com
·1 upvote ·2021-06-22
“As Slacktide said Primacy 3 is a grand touring summer tire that has been replaced by the Primacy 4 (some three years ago). It's been quite popular in Europe and tire availability/choice in NA/Europe differ greatly. I'd still recommend both Primacy 3 & 4 if you're looking for a smooth riding summer tire. The Pilot Sport 2 (PS2) has been a great ultra high performance tire some 15 years ago and I had these at that time, but it has been replaced by the PS3, PS4 and the even sportier Pilot SuperSport (PSS) and PS4S. If you want something more performance than the Primacy, I'd consider the PS4. I'm currently running the PS4 on my 911 (205 & 245 16 without Porsche spec) and the PSS both on my Cooper (205/45 R17 BMW/Mini spec) and my GTI (225/40 R18 HN spec). So some kind of a 'Michelin fan' too.”
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
Specs side by side
| Attribute | A · Bridgestone Turanza ER300 RFT | B · Michelin Primacy 3 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 42 |
| Rim diameters | — | 15″ – 20″ |
| UTQG | — | 240 A A |
Which one should you actually buy?
55
/ 100
Bridgestone Turanza ER300 RFT
70
/ 100
Michelin Primacy 3
Winner: Michelin Primacy 3 — better dry, handling and wet. It leads or ties in every category we score. Bridgestone Turanza ER300 RFT rests on little evidence so far (0 tests, 12 reviews), so read this result as provisional.
Pick tire B
You want the most grip on dry roads
Michelin Primacy 3 scores 72 vs 52 on dry.
Pick tire B
You enjoy sharp, responsive handling
Michelin Primacy 3 scores 68 vs 51 on handling.
Pick tire B
Your priority is wet-weather safety
Michelin Primacy 3 scores 72 vs 57 on wet.
Pick tire B
You want the most comfortable ride
Michelin Primacy 3 scores 68 vs 54 on comfort.
Tire A · Bridgestone Turanza ER300 RFT
Tire B · Michelin Primacy 3
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Turanza ER300 RFT or Primacy 3?
Which is better in the wet, Turanza ER300 RFT or Primacy 3?
Michelin Primacy 3, 72 vs 57 on our wet score.
Which grips better on dry roads, Turanza ER300 RFT or Primacy 3?
Michelin Primacy 3, 72 vs 52 on our dry score.
Which is more comfortable, Turanza ER300 RFT or Primacy 3?
Michelin Primacy 3, 68 vs 54 on our comfort score.
Which lasts longer, Turanza ER300 RFT or Primacy 3?
Michelin Primacy 3, 67 vs 57 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