Tests – · none yet Owners 67 · 24 reviews
Best test result: #11 of 14 in 2012 ACE Touring Summer Tyre Test (overall ranking)
Head-to-head
Updated
Firestone TZ300A vs Michelin Primacy 4 — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Primacy 4 is ahead, 78–68
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Tests 82 · 23 tests Owners 74 · 13,367 reviews
Best test result: #5 of 7 in 2019 Motor NAF/Vi Bilägare Summer Tire Test (Premium) (overall ranking)
“Had a shop install two new Michelin Primacy 4 in the front of my W124 yesterday. On the way back home i checked the pressure and the right one was a little on the low side. Drove the car today and after a few kms of city driving i noticed it was steering itself to the right once i was out of the stop and go traffic. Got out of the car and the tire was almost flat. I put 2.7 bar in it at the first station but noticed the sidewall is now damaged and there's a buldge... How is this possible? It is wet and i can hear the sound of air coming out of the tire but can't identify where it comes from. If the rim is the problem, why did they install the tire without noticing me first? If they don't admit their fault and blame it on the rim, i'm going to have to buy a new tire...”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
66
Dry
Primacy 4 +1480Why this score
Source TZ300A Primacy 4 Professional tests (TWG score) – 85 Reviews found online 65 74 -
71
Wet
Primacy 4 +1081Why this score
Source TZ300A Primacy 4 Professional tests (TWG score) – 85 Reviews found online 71 76 -
67
Comfort
Primacy 4 +976Why this score
Source TZ300A Primacy 4 Professional tests (TWG score) – 76 Reviews found online 64 74 -
–
Noise
No comparison72Why this score
Source TZ300A Primacy 4 Professional tests (TWG score) – 76 -
66
Treadwear
Primacy 4 +1177Why this score
Source TZ300A Primacy 4 Professional tests (TWG score) – 82 Reviews found online 66 71 -
67
Handling
Primacy 4 +774Why this score
Source TZ300A Primacy 4 Reviews found online 67 74
Scores at a glance
| Category | Firestone TZ300A | Michelin Primacy 4 |
|---|---|---|
| Relative Score | 68 | 78 |
| Dry | 66 | 80 |
| Wet | 71 | 81 |
| Comfort | 67 | 76 |
| Noise | – | 72 |
| Treadwear | 66 | 77 |
| Handling | 67 | 74 |
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.
Important
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Important
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Less important
NoneLessNeutralMoreMost
Less important
NoneLessNeutralMoreMost
Neither tire has a score here yet, so this weight changes nothing.
Important
NoneLessNeutralMoreMost
Neutral
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Recomputed
Headline score
68
/ 100
TZ300A
78
/ 100
Primacy 4
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.
| Discipline | Category | TZ300A | Primacy 4 | Δ | Both? |
|---|---|---|---|---|---|
| Overall Ranking | Overall | 9% #11/14 · 2012 ACE Touring Summer Tyre Test | 33% #5/7 · 2019 Motor NAF/Vi Bilägare Summer Tire Test (Premium) | −24.2 | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A TZ300A
Pros
- Excellent tread life and overall longevity
- Strong dry-weather grip and handling
- High value-for-money proposition
Cons
- Inconsistent road noise levels, with some users reporting intrusive drone
- Variable wet-weather performance and occasional aquaplaning concerns
- Lack of steering feedback or 'wallowy' feel on certain vehicle setups
Tire B Primacy 4
Pros
- Exceptional tread life and long-lasting durability
- Low road noise and a very quiet, comfortable ride
- Reliable and consistent wet and dry grip
Cons
- Vague, numb, or floaty steering feel with soft sidewalls under hard cornering
- High price point compared to competitors
- Occasional reports of increased road noise or harsher ride as the tread wears down
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Firestone TZ300A
We haven't collected enough community discussion about this tire yet.
Tire B
Positive
Michelin Primacy 4
Community sentiment towards the Michelin Primacy 4 is generally positive, with drivers frequently praising its quiet ride, comfort, and dependable wet and dry braking performance. Several owners note impressive longevity reaching over 50,000 to 70,000 km, though some EV and SUV drivers report accelerated wear and fragile sidewalls over rough terrain. It is commonly viewed as a premium touring tire that commands high prices compared to competitors.
f30.bimmerpost.com
“I have Primacy 4s on my Volvo wagon. I've been very pleased. Plenty of grip, low road noise and longevity.”
vwvortex.com
·2026-09-12
“I might try to have a look at one today. There are two Uniroyal shops near me. Whether they have one in stock to look at though...? The trouble is they look really nice online but I'd like to see them in the flesh first. The old tyres (above photo) that were on these wheels were that nice square edged profile that I like, much the same as the Michelin Pilot Sports. These are going on my sons Golf EV so I'm also trying to consider if they are A rated for fuel, the best wet grip I can find and the lowest decibel level. The best choice I can find is the Michelin Primacy 4 which are A, A and 68. But on Black Circles it says they were designed for BMW. I'm sure they fit any wheel but do those properties still hold? I've always bought Pilots but B, B and 72, and its this 72 that really bugs me, is whats making me invest so much time into getting the right tyre for Toms EV. I'm getting a Tesla this Tuesday which does in fact come with the Pilots so they must be good on EV's anyway. Who knew buying tyres was so complicated.”
r/AutomobileRO
·2 upvotes ·2025-09-22
“Am avut primacy 4 pe o electrica. Destul de dezamagit de faptul ca dupa ~ 28.000 km s-au tocit rau de au ajuns cam la 3 mm. Placute la condus, silentioase, dar nu cele mai aderente. Pilot sport 4 pe aceiasi electrica cu primacy 4. Huruie de te doare capul. Aderenta nu o simt neaparat wow fata de primacy 4. Nu le mai suport si abia astept sa le trec pe iarna, oricum asta fiind ultima incaltare cu ele. Pe o termica am primacy 5, si sunt cele mai ok din experienta mea. Cele mai silentioase si aderente din cele 3. Dupa 20.000 km uzura a scazut cam cu 1 mm. Recomandarea mea e sa alegi primacy 5 fara ezitare.”
Top themes
#tread life and longevity#cabin noise and comfort#wet and dry grip#comparisons with Pilot Sport#EV tire performance#sidewall damage and punctures#premium pricing
Based on 44 community posts
Specs side by side
| Attribute | A · Firestone TZ300A | B · Michelin Primacy 4 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 57 |
| Rim diameters | — | 15″ – 20″ |
Which one should you actually buy?
68
/ 100
Firestone TZ300A
78
/ 100
Michelin Primacy 4
Winner: Michelin Primacy 4 — better dry, treadwear and wet. It leads or ties in every category we score.
Pick tire B
You want the most grip on dry roads
Michelin Primacy 4 scores 80 vs 66 on dry.
Pick tire B
You want the longest tread life
Michelin Primacy 4 scores 77 vs 66 on treadwear.
Pick tire B
Your priority is wet-weather safety
Michelin Primacy 4 scores 81 vs 71 on wet.
Pick tire B
You want the most comfortable ride
Michelin Primacy 4 scores 76 vs 67 on comfort.
Tire A · Firestone TZ300A
Tire B · Michelin Primacy 4
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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.