Tests – · none yet Owners 78 · 63 reviews
Head-to-head
Updated
Dunlop SP Sport FM800 vs Nexen CP661 — 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 + 0 road tests and 63 + 11 owner reviews. How we score
SP Sport FM800 is ahead, 76–61
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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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75
Dry
SP Sport FM800 +1560Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) ≈ 72 (est.) ≈ 63 (est.) Reviews found online 78 56 SP Sport FM800: 60% × 72.1 (est.) + 40% × 78.1 = 75
CP661: 60% × 63 (est.) + 40% × 55.9 = 60
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).
No road tests of dry for CP661. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
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79
Wet
SP Sport FM800 +1762Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) ≈ 77 (est.) ≈ 64 (est.) Reviews found online 82 58 SP Sport FM800: 60% × 76.8 (est.) + 40% × 81.8 = 79
CP661: 60% × 63.9 (est.) + 40% × 58.2 = 62
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).
No road tests of wet for CP661. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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–
Snow
No comparison56Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) – ≈ 63 (est.) Reviews found online – 45 CP661: 60% × 62.5 (est.) + 40% × 45.4 = 56
No road tests of snow for CP661. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
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73
Comfort
SP Sport FM800 +1261Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) ≈ 70 (est.) ≈ 67 (est.) Reviews found online 76 58 SP Sport FM800: 40% × 70 (est.) + 60% × 75.6 = 73
CP661: 40% × 66.5 (est.) + 60% × 58 = 61
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).
No road tests of comfort for CP661. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
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–
Noise
No comparison63Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) – ≈ 66 (est.) Reviews found online – 57 CP661: 60% × 66.4 (est.) + 40% × 57.3 = 63
No road tests of noise for CP661. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
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72
Treadwear
SP Sport FM800 +1062Why this score
Source SP Sport FM800 CP661 Professional tests (TWG score) ≈ 70 (est.) ≈ 64 (est.) Reviews found online 76 59 SP Sport FM800: 60% × 69.8 (est.) + 40% × 75.7 = 72
CP661: 60% × 63.8 (est.) + 40% × 59.1 = 62
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).
No road tests of treadwear for CP661. 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 +2059Why this score
Source SP Sport FM800 CP661 Reviews found online 79 59
Scores at a glance
| Category | Dunlop SP Sport FM800 | Nexen CP661 |
|---|---|---|
| Relative Score | 76 | 61 |
| Dry | 75 | 60 |
| Wet | 79 | 62 |
| Snow | – | 56 |
| Comfort | 73 | 61 |
| Noise | – | 63 |
| Treadwear | 72 | 62 |
| Handling (owners) | 79 | 59 |
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
Neutral
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
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
Recomputed
Headline score
76
/ 100
SP Sport FM800
61
/ 100
CP661
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 CP661
Pros
- Exceptional value for money compared to premium alternatives.
- Reliable and consistent grip in both wet and dry weather conditions.
- Impressive tread life, with some users reporting significantly higher mileage than premium tires.
Cons
- Inconsistent tread wear reports, with some users experiencing premature replacement intervals.
- Performance is optimized for standard commuting rather than high-performance driving.
- Limited availability of specific speed ratings or sizes for specialized vehicles.
Specs side by side
| Attribute | A · Dunlop SP Sport FM800 | B · Nexen CP661 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 11 |
| Rim diameters | — | 13″ – 17″ |
| Tread depth | — | 9/32″ |
| UTQG | 320 B A | 400 A B |
| Sidewall | — | Blackwall |
| Max pressure | — | 44 psi |
Which one should you actually buy?
76
/ 100
Dunlop SP Sport FM800
61
/ 100
Nexen CP661
Winner: Dunlop SP Sport FM800 — better handling, wet and dry. It leads or ties in every category we score. Nexen CP661 rests on little evidence so far (0 tests, 11 reviews), so read this result as provisional.
Pick tire A
You enjoy sharp, responsive handling
Dunlop SP Sport FM800 scores 79 vs 59 on handling.
Pick tire A
Your priority is wet-weather safety
Dunlop SP Sport FM800 scores 79 vs 62 on wet.
Pick tire A
You want the most grip on dry roads
Dunlop SP Sport FM800 scores 75 vs 60 on dry.
Pick tire A
You want the most comfortable ride
Dunlop SP Sport FM800 scores 73 vs 61 on comfort.
Tire A · Dunlop SP Sport FM800
Tire B · Nexen CP661
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SP Sport FM800 or CP661?
Which is better in the wet, SP Sport FM800 or CP661?
Dunlop SP Sport FM800, 79 vs 62 on our wet score.
Which grips better on dry roads, SP Sport FM800 or CP661?
Dunlop SP Sport FM800, 75 vs 60 on our dry score.
Which is more comfortable, SP Sport FM800 or CP661?
Dunlop SP Sport FM800, 73 vs 61 on our comfort score.
Which lasts longer, SP Sport FM800 or CP661?
Dunlop SP Sport FM800, 72 vs 62 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