Tests – · none yet Owners 53 · 9 reviews
Head-to-head
Updated
Goodyear Eagle F1 GS-D2 vs Kumho Solus KL21 — 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 9 + 14 owner reviews. How we score
Eagle F1 GS-D2 leads, 58–54 Narrow edge
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests – · none yet Owners 47 · 14 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
59
Dry
Eagle F1 GS-D2 +653Why this score
Source Eagle F1 GS-D2 Solus KL21 Professional tests (TWG score) ≈ 62 (est.) ≈ 58 (est.) Reviews found online 54 45 Eagle F1 GS-D2: 60% × 62.3 (est.) + 40% × 54.4 = 59
Solus KL21: 60% × 58.2 (est.) + 40% × 44.5 = 53
No road tests of dry for Eagle F1 GS-D2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
No road tests of dry for Solus KL21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
62
Wet
Eagle F1 GS-D2 +557Why this score
Source Eagle F1 GS-D2 Solus KL21 Professional tests (TWG score) ≈ 64 (est.) ≈ 60 (est.) Reviews found online 59 52 Eagle F1 GS-D2: 60% × 64 (est.) + 40% × 58.6 = 62
Solus KL21: 60% × 60.2 (est.) + 40% × 51.6 = 57
No road tests of wet for Eagle F1 GS-D2. 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 Solus KL21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
–
Snow
No comparison52Why this score
Source Eagle F1 GS-D2 Solus KL21 Professional tests (TWG score) – ≈ 59 (est.) Reviews found online – 41 Solus KL21: 60% × 59.5 (est.) + 40% × 40.5 = 52
No road tests of snow for Solus KL21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
-
55
Comfort
Eagle F1 GS-D2 +352Why this score
Source Eagle F1 GS-D2 Solus KL21 Professional tests (TWG score) ≈ 65 (est.) ≈ 64 (est.) Reviews found online 48 44 Eagle F1 GS-D2: 40% × 65.2 (est.) + 60% × 47.7 = 55
Solus KL21: 40% × 64.5 (est.) + 60% × 43.8 = 52
No road tests of comfort for Eagle F1 GS-D2 or Solus KL21. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
56
Treadwear
Level56Why this score
Source Eagle F1 GS-D2 Solus KL21 Professional tests (TWG score) ≈ 60 (est.) ≈ 60 (est.) Reviews found online 49 50 Eagle F1 GS-D2: 60% × 60.1 (est.) + 40% × 48.8 = 56
Solus KL21: 60% × 60.5 (est.) + 40% × 49.9 = 56
No road tests of treadwear for Eagle F1 GS-D2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
No road tests of treadwear for Solus KL21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
52
Handling (owners)
Eagle F1 GS-D2 +844Why this score
Source Eagle F1 GS-D2 Solus KL21 Reviews found online 52 44
Scores at a glance
| Category | Goodyear Eagle F1 GS-D2 | Kumho Solus KL21 |
|---|---|---|
| Relative Score | 58 | 54 |
| Dry | 59 | 53 |
| Wet | 62 | 57 |
| Snow | – | 52 |
| Comfort | 55 | 52 |
| Treadwear | 56 | 56 |
| Handling (owners) | 52 | 44 |
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
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
58
/ 100
Eagle F1 GS-D2
54
/ 100
Solus KL21
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 Eagle F1 GS-D2
Pros
- Predictable and progressive grip loss characteristics
- Good initial wet weather traction and performance
- Suitable OEM fitment matching for light hatchbacks like the Suzuki Swift Sport
Cons
- High noise levels, particularly when cornering
- Compounds harden prematurely, leading to a severe loss of grip after extended mileage
- Poor rim protection design leading to vulnerable wheel edges
Tire B Solus KL21
Pros
- Impressive treadwear and longevity reported by many users, with several achieving over 30,000 to 40,000 miles
- Good ride comfort and low road noise under normal driving conditions
- Affordable replacement pricing compared to premium tier brands
Cons
- Extremely poor grip and significantly increased braking distances on fresh or compact snow and ice
- Isolated reports of extreme premature wear or complete tread failure under 20,000 miles
- Structural deformation issues reported by at least one user
Specs side by side
| Attribute | A · Goodyear Eagle F1 GS-D2 | B · Kumho Solus KL21 |
|---|---|---|
| Category | Summer | All Season |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 5 |
| Rim diameters | — | 17″ – 20″ |
Which one should you actually buy?
58
/ 100
Goodyear Eagle F1 GS-D2
54
/ 100
Kumho Solus KL21
Narrow edge: Goodyear Eagle F1 GS-D2 — better handling, dry and wet. It leads or ties in every category we score. Goodyear Eagle F1 GS-D2 rests on little evidence so far (0 tests, 9 reviews), so read this result as provisional. Kumho Solus KL21 rests on little evidence so far (0 tests, 14 reviews), so read this result as provisional.
Pick tire A
You enjoy sharp, responsive handling
Goodyear Eagle F1 GS-D2 scores 52 vs 44 on handling.
Pick tire A
You want the most grip on dry roads
Goodyear Eagle F1 GS-D2 scores 59 vs 53 on dry.
Pick tire A
Your priority is wet-weather safety
Goodyear Eagle F1 GS-D2 scores 62 vs 57 on wet.
Pick tire A
You want the most comfortable ride
Goodyear Eagle F1 GS-D2 scores 55 vs 52 on comfort.
Tire A · Goodyear Eagle F1 GS-D2
Tire B · Kumho Solus KL21
TireWheelGuide may earn a commission from purchases made through these links.
Eagle F1 GS-D2 or Solus KL21?
Which is better in the wet, Eagle F1 GS-D2 or Solus KL21?
Goodyear Eagle F1 GS-D2, 62 vs 57 on our wet score.
Which grips better on dry roads, Eagle F1 GS-D2 or Solus KL21?
Goodyear Eagle F1 GS-D2, 59 vs 53 on our dry score.
Which is more comfortable, Eagle F1 GS-D2 or Solus KL21?
Goodyear Eagle F1 GS-D2, 55 vs 52 on our comfort score.
Which lasts longer, Eagle F1 GS-D2 or Solus KL21?
Neither, by our numbers: 56 vs 56 on the treadwear score, within 3 points.
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