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Cooper Discoverer AT3 LT vs Laufenn I Fit+ — Compared (September 2026)
Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
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7 categories, side by side
Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
Dry
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Professional tests (TWG score) | – | 87 |
| Tyre Reviews owners | 85 | 88 |
| SimpleTire owners | 100 | – |
| America's Tire owners | 97 | – |
Wet
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Professional tests (TWG score) | – | 71 |
| Tyre Reviews owners | 85 | 93 |
| SimpleTire owners | 95 | – |
| America's Tire owners | 94 | – |
Snow
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Professional tests (TWG score) | – | 78 |
| Tyre Reviews owners | 90 | 100 |
| SimpleTire owners | 93 | – |
Comfort
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Tyre Reviews owners | 75 | 90 |
| SimpleTire owners | 95 | – |
| America's Tire owners | 94 | – |
Noise
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Professional tests (TWG score) | – | 41 |
| SimpleTire owners | 93 | – |
| America's Tire owners | 92 | – |
Treadwear
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Tyre Reviews owners | 40 | 83 |
| SimpleTire owners | 100 | – |
| America's Tire owners | 93 | – |
Handling
Why this score
| Source | Discoverer AT3 LT | I Fit+ |
|---|---|---|
| Tyre Reviews owners | 45 | 90 |
| America's Tire owners | 94 | – |
Scores at a glance
| Category | Cooper Discoverer AT3 LT | Laufenn I Fit+ |
|---|---|---|
| Relative Score | 94 | 84 |
| Dry | 97 | 90 |
| Wet | 95 | 81 |
| Snow | 91 | 87 |
| Comfort | 94 | 88 |
| Noise | 92 | 54 |
| Treadwear | 93 | 92 |
| Handling | 94 | 90 |
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.
Tire A
Tire B
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
Not enough owner reviews yet to extract themes.
The Laufenn I Fit+ is widely regarded as a high-value winter tire that punches well above its price point, offering impressive traction on snow and ice. While most users praise its performance in severe winter conditions, some note minor limitations regarding water and slush evacuation.
Pros
- Exceptional traction and grip on snow and ice
- Outstanding price-to-quality ratio
- Reliable performance in freezing rain and slushy conditions
- Competent handling on dry and wet road surfaces
Cons
- Potential difficulty with water evacuation in heavy standing water
- Performance on deep slush is slightly less refined than on packed snow
- Limited long-term tread wear data available from early-stage users
Observations
- Users operating smaller sedans, such as the VW Jetta, report high confidence on steep, snow-covered inclines.
- BMW 3-series owners noted that the tire serves as a highly capable, cost-effective alternative to premium-brand winter tires.
Specs side by side
| Attribute | A · Cooper Discoverer AT3 LT | B · Laufenn I Fit+ |
|---|---|---|
| Category | Premium Touring All Season tire | Winter Premium Touring tires |
| Vehicle type | SUV and 4x4 | Passenger Car / Crossover |
| Sizes available | 9 | — |
| Rim diameters | 16″ – 18″ | — |
| Tread depth | 16 - 17/32″ | — |
| Treadwear warranty | 60,000 mi | — |
| Sidewall | Black Side Wall - Raised Outline White Lettering | — |
| Max pressure | 50 - 80 psi | — |
Which one should you actually buy?
Cooper
Laufenn
Winner: Cooper Discoverer AT3 LT — better noise, wet and dry. It leads or ties in every category we score.
Cooper Discoverer AT3 LT scores 92 vs 54 on noise.
Cooper Discoverer AT3 LT scores 95 vs 81 on wet.
Cooper Discoverer AT3 LT scores 97 vs 90 on dry.
Cooper Discoverer AT3 LT scores 94 vs 88 on comfort.
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.