Tests – · none yet Owners 78 · 63 reviews
Head-to-head
Updated
Dunlop SP Sport FM800 vs Michelin Primacy 4+ — 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 + 10 road tests and 63 + 40 owner reviews. How we score
Primacy 4+ leads, 78–76 Narrow edge
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Tests 85 · 10 tests Owners 71 · 40 reviews
Best test result: #1 of 16 in 2024 ADAC Summer Tyre Test (abrasion)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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74
Dry
Primacy 4+ +478Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 9 tests ≈ 72 (est.) 82 Reviews found online 78 71 SP Sport FM800: 60% × 72.1 (est.) + 40% × 78 = 74
Primacy 4+: 60% × 82.4 + 40% × 71 = 78
No road tests of dry for SP Sport FM800. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
-
79
Wet
Level79Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 9 tests ≈ 77 (est.) 82 Reviews found online 82 75 SP Sport FM800: 60% × 76.8 (est.) + 40% × 81.8 = 79
Primacy 4+: 60% × 82.1 + 40% × 74.6 = 79
No road tests of wet for SP Sport FM800. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
73
Comfort
SP Sport FM800 +271Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 1 tests ≈ 70 (est.) 73 Reviews found online 76 69 SP Sport FM800: 40% × 70.1 (est.) + 60% × 75.5 = 73
Primacy 4+: 40% × 72.9 + 60% × 69.3 = 71
No road tests of comfort for SP Sport FM800. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
-
–
Noise
No comparison72Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 7 tests – 76 Reviews found online – ≈ 66 (est.) Primacy 4+: 60% × 76.2 + 40% × 66.3 (est.) = 72
No owner ratings of noise for Primacy 4+. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.
-
72
Treadwear
Primacy 4+ +1385Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 4 tests ≈ 70 (est.) 95 Reviews found online 76 70 SP Sport FM800: 60% × 69.9 (est.) + 40% × 75.8 = 72
Primacy 4+: 60% × 94.9 + 40% × 69.6 = 85
No road tests of treadwear for SP Sport FM800. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
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79
Handling (owners)
SP Sport FM800 +1366Why this score
Source SP Sport FM800 Primacy 4+ Reviews found online 79 66 -
–
Efficiency
No comparison78Why this score
Source SP Sport FM800 Primacy 4+ Professional tests (TWG score) · – / 8 tests – 78
Scores at a glance
| Category | Dunlop SP Sport FM800 | Michelin Primacy 4+ |
|---|---|---|
| Relative Score | 76 | 78 |
| Dry | 74 | 78 |
| Wet | 79 | 79 |
| Comfort | 73 | 71 |
| Noise | – | 72 |
| Treadwear | 72 | 85 |
| Handling (owners) | 79 | 66 |
| Efficiency | – | 78 |
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
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Not important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
76
/ 100
SP Sport FM800
78
/ 100
Primacy 4+
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A SP Sport FM800
Pros
- Exceptional wet and dry traction with strong anti-aquaplaning capabilities
- High value for money compared to premium brands like Michelin and Bridgestone
- Low road noise and very quiet, smooth ride quality
Cons
- Faster than average tread wear reported by some drivers
- Rubber compound can harden over time, leading to reduced performance as the tire ages
- Softer sidewalls can occasionally result in slightly less precise steering feel
Tire B Primacy 4+
Pros
- Strong wet and dry grip and braking confidence, often cited as a big improvement over Bridgestone, Dunlop and Nexen tyres, including on powerful cars and PHEVs that previously spun their tyres
- Comfortable, compliant ride with soft sidewalls that suits softly sprung and family cars
- Low and even tread wear, with several owners reporting little visible wear after 5,000–10,000 miles and one reporting about 60,000 km in hot climates
Cons
- Road noise and drone, especially on rough asphalt, was described as severe by several owners (Skoda Yeti, Lexus), contradicting other reports of quiet running
- Reduced grip and confidence in cold, damp conditions, with two UK owners saying the tyre behaves like a budget tyre
- Premium pricing, with some owners questioning value when life fell short of expectations
Specs side by side
| Attribute | A · Dunlop SP Sport FM800 | B · Michelin Primacy 4+ |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 66 |
| Rim diameters | — | 16″ – 21″ |
| UTQG | 320 B A | — |
Which one should you actually buy?
76
/ 100
Dunlop SP Sport FM800
78
/ 100
Michelin Primacy 4+
Narrow edge: Michelin Primacy 4+ — better treadwear and dry. Pick the Dunlop SP Sport FM800 if handling matters most to you.
Pick tire A
You enjoy sharp, responsive handling
Dunlop SP Sport FM800 scores 79 vs 66 on handling.
Pick tire B
You want the longest tread life
Michelin Primacy 4+ scores 85 vs 72 on treadwear.
Pick tire B
You want the most grip on dry roads
Michelin Primacy 4+ scores 78 vs 74 on dry.
Tire A · Dunlop SP Sport FM800
Tire B · Michelin Primacy 4+
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SP Sport FM800 or Primacy 4+?
Which is better in the wet, SP Sport FM800 or Primacy 4+?
Neither, by our numbers: 79 vs 79 on the wet score, within 3 points.
Which grips better on dry roads, SP Sport FM800 or Primacy 4+?
Michelin Primacy 4+, 78 vs 74 on our dry score.
Which is more comfortable, SP Sport FM800 or Primacy 4+?
Neither, by our numbers: 73 vs 71 on the comfort score, within 3 points.
Which lasts longer, SP Sport FM800 or Primacy 4+?
Michelin Primacy 4+, 85 vs 72 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