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Head-to-head Updated

Cooper Discoverer HT3 vs Firestone Transforce AT2 — 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 99 + 17 owner reviews. How we score

Transforce AT2 leads, 70–68 Narrow edge

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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.

  1. 68

    Dry

    Transforce AT2 +1
    69
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 68 (est.)≈ 69 (est.)
    Reviews found online6969

    Discoverer HT3: 60% × 68.2 (est.) + 40% × 68.6 = 68

    Transforce AT2: 60% × 68.5 (est.) + 40% × 69.4 = 69

    No road tests of dry for Discoverer HT3. 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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 74

    Wet

    Discoverer HT3 +2
    72
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 74 (est.)≈ 71 (est.)
    Reviews found online7672

    Discoverer HT3: 60% × 73.5 (est.) + 40% × 75.9 = 74

    Transforce AT2: 60% × 71.3 (est.) + 40% × 71.8 = 72

    No road tests of wet for Discoverer HT3. 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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 64

    Snow

    Transforce AT2 +8
    72
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 67 (est.)≈ 71 (est.)
    Reviews found online5973

    Discoverer HT3: 60% × 66.9 (est.) + 40% × 59.1 = 64

    Transforce AT2: 60% × 71.2 (est.) + 40% × 72.6 = 72

    No road tests of snow for Discoverer HT3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

    No road tests of snow for Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 60

    Comfort

    Discoverer HT3 +1
    59
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 66 (est.)≈ 66 (est.)
    Reviews found online5654

    Discoverer HT3: 40% × 66.1 (est.) + 60% × 56.2 = 60

    Transforce AT2: 40% × 65.8 (est.) + 60% × 54.3 = 59

    No road tests of comfort for Discoverer HT3. 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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 67

    Noise

    Transforce AT2 +2
    69
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 66 (est.)≈ 66 (est.)
    Reviews found online6874

    Discoverer HT3: 60% × 66.4 (est.) + 40% × 67.9 = 67

    Transforce AT2: 60% × 66.4 (est.) + 40% × 73.5 = 69

    No road tests of noise for Discoverer HT3 or Transforce AT2. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 68

    Treadwear

    Transforce AT2 +3
    71
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Professional tests (TWG score)≈ 67 (est.)≈ 69 (est.)
    Reviews found online6974

    Discoverer HT3: 60% × 67.4 (est.) + 40% × 69 = 68

    Transforce AT2: 60% × 69.3 (est.) + 40% × 74.2 = 71

    No road tests of treadwear for Discoverer HT3. 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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 66

    Handling (owners)

    No comparison
    –
    Why this score
    SourceDiscoverer HT3Transforce AT2
    Reviews found online66–
Scores at a glance
CategoryCooper Discoverer HT3Firestone Transforce AT2
Relative Score 68 70
Dry 68 69
Wet 74 72
Snow 64 72
Comfort 60 59
Noise 67 69
Treadwear 68 71
Handling (owners) 66 –

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
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less 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
± 7

Discoverer HT3

± 8

Transforce AT2

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 Discoverer HT3

Pros

  • Smooth and comfortable ride quality
  • Excellent performance and stability when towing heavy loads or fifth wheels
  • Good traction in rain and winter conditions

Cons

  • Some users report higher-than-expected road noise on certain vehicles
  • Treadwear may fall short of advertised or expected mileage milestones for some drivers
  • Isolated reports of structural failures or blowouts
All owner themes in the Discoverer HT3 review

Tire B Transforce AT2

Pros

  • Excellent value and competitive price point for a commercial line tire
  • Quiet on-road operation despite the deep, aggressive tread design
  • Reliable durability and high mileage potential based on long-term user history

Cons

  • Prone to highway wandering and tracking grooves or ridges in the road
  • Difficulty in achieving proper road balance, causing high-speed vibrations
  • Unstable or 'floaty' feel at highway speeds for specific heavy-duty applications
All owner themes in the Transforce AT2 review

Specs side by side

Attribute A · Cooper Discoverer HT3 B · Firestone Transforce AT2
CategoryAll-Season tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available1717
Rim diameters15″ – 20″16″ – 20″
Tread depth14 - 15/32″32/32″
Treadwear warranty50,000 mi—
SidewallBlack Side WallOutlined White Lettering
Max pressure50 - 83 psi80 psi
Sizes in common1313

Which one should you actually buy?

Cooper Discoverer HT3

Firestone Transforce AT2

Narrow edge: Firestone Transforce AT2 — better snow and treadwear. Where the Cooper Discoverer HT3 is ahead, it is by less than 3 points. Firestone Transforce AT2 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.

Pick tire B You drive through snowy winters

Firestone Transforce AT2 scores 72 vs 64 on snow.

Pick tire B You want the longest tread life

Firestone Transforce AT2 scores 71 vs 68 on treadwear.

Tire A · Cooper Discoverer HT3
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Tire B · Firestone Transforce AT2
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Discoverer HT3 or Transforce AT2?

Which is better in the wet, Discoverer HT3 or Transforce AT2?

Neither, by our numbers: 74 vs 72 on the wet score, within 3 points.

Which grips better on dry roads, Discoverer HT3 or Transforce AT2?

Neither, by our numbers: 68 vs 69 on the dry score, within 3 points.

Which is better in snow, Discoverer HT3 or Transforce AT2?

Firestone Transforce AT2, 72 vs 64 on our snow score.

Which is quieter, Discoverer HT3 or Transforce AT2?

Neither, by our numbers: 67 vs 69 on the noise score, within 3 points.

Which is more comfortable, Discoverer HT3 or Transforce AT2?

Neither, by our numbers: 60 vs 59 on the comfort score, within 3 points.

Which lasts longer, Discoverer HT3 or Transforce AT2?

Firestone Transforce AT2, 71 vs 68 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