Tests 83 · 10 tests Owners 72 · 39 reviews
Best test result: #1 of 16 in 2024 ADAC Summer Tyre Test (abrasion)
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 10 + 0 road tests and 39 + 5 owner reviews. How we score
Primacy 4+ is ahead, 77–36
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests 83 · 10 tests Owners 72 · 39 reviews
Best test result: #1 of 16 in 2024 ADAC Summer Tyre Test (abrasion)
Tests – · none yet Owners 22 · 5 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) · 9 / – tests | 82 | ≈ 49 (est.) |
| Reviews found online | 72 | 21 |
Primacy 4+: 60% × 81.9 + 40% × 71.8 = 78
Geolandar G91A: 60% × 48.7 (est.) + 40% × 20.5 = 37
No road tests of dry for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) · 9 / – tests | 82 | ≈ 41 (est.) |
| Reviews found online | 75 | 19 |
Primacy 4+: 60% × 81.7 + 40% × 75.4 = 79
Geolandar G91A: 60% × 41.3 (est.) + 40% × 18.9 = 32
No road tests of wet for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) | – | ≈ 58 (est.) |
| Reviews found online | – | 33 |
Geolandar G91A: 60% × 57.5 (est.) + 40% × 32.5 = 48
No road tests of snow for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 73 | ≈ 60 (est.) |
| Reviews found online | 72 | 14 |
Primacy 4+: 60% × 73.2 + 40% × 71.7 = 73
Geolandar G91A: 60% × 59.6 (est.) + 40% × 14.1 = 41
No road tests of comfort for Geolandar G91A. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) · 7 / – tests | 77 | ≈ 67 (est.) |
| Reviews found online | ≈ 67 (est.) | 29 |
Primacy 4+: 60% × 76.5 + 40% × 67.3 (est.) = 73
Geolandar G91A: 60% × 67.3 (est.) + 40% × 29 = 52
No owner ratings of noise for Primacy 4+. The owner half is the owners’ average (67): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.
No road tests of noise for Geolandar G91A. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Professional tests (TWG score) · 4 / – tests | 90 | ≈ 52 (est.) |
| Reviews found online | 70 | 20 |
Primacy 4+: 60% × 89.8 + 40% × 70.3 = 82
Geolandar G91A: 60% × 51.6 (est.) + 40% × 20.1 = 39
No road tests of treadwear for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
| Source | Primacy 4+ | Geolandar G91A |
|---|---|---|
| Reviews found online | 68 | 23 |
| Category | Michelin Primacy 4+ | Yokohama Geolandar G91A |
|---|---|---|
| Relative Score | 77 | 36 |
| Dry | 78 | 37 |
| Wet | 79 | 32 |
| Snow | – | 48 |
| Comfort | 73 | 41 |
| Noise | 73 | 52 |
| Treadwear | 82 | 39 |
| Handling (owners) | 68 | 23 |
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.
Primacy 4+
Geolandar G91A
Only categories both tires have data for count toward the headline score.
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Not enough owner reviews yet to extract themes.
| Attribute | A · Michelin Primacy 4+ | B · Yokohama Geolandar G91A |
|---|---|---|
| Category | Summer | All-Season tire |
| Vehicle type | Passenger Car / Crossover | SUV and 4x4 |
| Sizes available | 66 | 1 |
| Rim diameters | 16″ – 21″ | 17″ |
| Tread depth | — | 10/32″ |
| UTQG | — | 280 B A |
| Sidewall | — | Blackwall |
| Max pressure | — | 44 psi |
Michelin Primacy 4+
Yokohama Geolandar G91A
Winner: Michelin Primacy 4+ — better wet, handling and treadwear. It leads or ties in every category we score. Yokohama Geolandar G91A rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.
Michelin Primacy 4+ scores 79 vs 32 on wet.
Michelin Primacy 4+ scores 68 vs 23 on handling.
Michelin Primacy 4+ scores 82 vs 39 on treadwear.
Michelin Primacy 4+ scores 78 vs 37 on dry.
TireWheelGuide may earn a commission from purchases made through these links.
Michelin Primacy 4+, 79 vs 32 on our wet score.
Michelin Primacy 4+, 78 vs 37 on our dry score.
Michelin Primacy 4+, 73 vs 52 on our noise score.
Michelin Primacy 4+, 73 vs 41 on our comfort score.
Michelin Primacy 4+, 82 vs 39 on our treadwear score.
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