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Head-to-head Updated

Cooper Discoverer AT3 XLT vs Cooper WeatherMaster SA2+ — 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 + 6 road tests and 800 + 6 owner reviews. How we score

Discoverer AT3 XLT is ahead, 78–60

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Cooper Discoverer AT3 XLT
Tire ACooper

Discoverer AT3 XLT

All-Terrain tire

± 7

Tests – · none yet Owners 82 · 800 reviews

“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”

Cooper WeatherMaster SA2+
Tire BCooper

WeatherMaster SA2+

Winter

± 8

Tests 57 · 6 tests Owners 63 · 6 reviews

Best test result: #2 of 20 in 2020 Auto Bild Performance Winter Tyre Test (straight aquaplaning)

Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 79

    Dry

    Discoverer AT3 XLT +26
    53
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 3 tests≈ 75 (est.)50
    Reviews found online8557

    Discoverer AT3 XLT: 60% × 75.1 (est.) + 40% × 85.3 = 79

    WeatherMaster SA2+: 60% × 50.3 + 40% × 57.1 = 53

    No road tests of dry for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 83

    Wet

    Discoverer AT3 XLT +8
    75
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 6 tests≈ 80 (est.)81
    Reviews found online8767

    Discoverer AT3 XLT: 60% × 79.7 (est.) + 40% × 87.2 = 83

    WeatherMaster SA2+: 60% × 80.5 + 40% × 66.6 = 75

    No road tests of wet for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 71

    Snow

    Discoverer AT3 XLT +18
    53
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 6 tests≈ 71 (est.)44
    Reviews found online7267

    Discoverer AT3 XLT: 60% × 70.9 (est.) + 40% × 71.7 = 71

    WeatherMaster SA2+: 60% × 43.6 + 40% × 66.5 = 53

    No road tests of snow for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 77

    Comfort

    Discoverer AT3 XLT +13
    64
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score)≈ 71 (est.)≈ 67 (est.)
    Reviews found online8062

    Discoverer AT3 XLT: 40% × 71 (est.) + 60% × 80.3 = 77

    WeatherMaster SA2+: 40% × 67.2 (est.) + 60% × 61.6 = 64

    No road tests of comfort for Discoverer AT3 XLT. 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 WeatherMaster SA2+. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 73

    Noise

    Discoverer AT3 XLT +11
    62
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 2 tests≈ 66 (est.)60
    Reviews found online82≈ 66 (est.)

    Discoverer AT3 XLT: 60% × 66.4 (est.) + 40% × 82.4 = 73

    WeatherMaster SA2+: 60% × 59.7 + 40% × 66.4 (est.) = 62

    No road tests of noise for Discoverer AT3 XLT. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

    No owner ratings of noise for WeatherMaster SA2+. 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.

  6. 74

    Treadwear

    Discoverer AT3 XLT +18
    56
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 1 tests≈ 71 (est.)51
    Reviews found online7963

    Discoverer AT3 XLT: 60% × 71.2 (est.) + 40% × 79.4 = 74

    WeatherMaster SA2+: 60% × 51 + 40% × 63.4 = 56

    No road tests of treadwear for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 78

    Handling (owners)

    Discoverer AT3 XLT +25
    53
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Reviews found online7853
  8. –

    Efficiency

    No comparison
    56
    Why this score
    SourceDiscoverer AT3 XLTWeatherMaster SA2+
    Professional tests (TWG score) · – / 2 tests–56
Scores at a glance
CategoryCooper Discoverer AT3 XLTCooper WeatherMaster SA2+
Relative Score 78 60
Dry 79 53
Wet 83 75
Snow 71 53
Comfort 77 64
Noise 73 62
Treadwear 74 56
Handling (owners) 78 53
Efficiency – 56

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
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
± 7

Discoverer AT3 XLT

± 8

WeatherMaster SA2+

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 AT3 XLT

Pros

  • Significantly lower road noise than comparable aggressive all-terrain tires
  • Excellent wet weather, snow, and slush traction
  • Sturdy sidewalls and stable performance when towing heavy loads

Cons

  • Some users report difficulty with balancing, leading to vibrations or a rough ride
  • Tread life occasionally falls short of expectations for certain drivers
  • Can struggle or get gummed up in deep mud
All owner themes in the Discoverer AT3 XLT review

Tire B WeatherMaster SA2+

Pros

  • Strong value for the price, with several reviewers saying it is hard to beat and would buy again
  • Good wet-weather grip and stability, with a comfortable, soft ride
  • Capable in cold conditions and light or easy snow, and usable across mixed wet, dry, snow and ice on a long trip

Cons

  • Snow and ice performance is only average in heavy snow or on ice, with one reviewer moving to a Nordic-compound tire for extra grip
  • Handling and road feedback criticized, with one reviewer describing fast cornering as scary despite good grip
  • Dry performance is limited, as the tire reportedly overheats quickly and loses grip when driven spiritedly
All owner themes in the WeatherMaster SA2+ review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Cooper Discoverer AT3 XLT

Positive

Community members report high satisfaction with the Cooper Discoverer AT3 XLT, highlighting its quiet ride, long tread life, and strong winter performance. Several owners praise its smooth ride quality and durability under towing conditions compared to rival all-terrain tires. Discussion also commonly centers around sizing, fitment, and snow ratings.

r/Offroad ·1 upvote ·2025-10-02

“I’ve run Hankook dynapro’s, BFG ko2, Nokian outpost nat, and fallen wild peaks. Currently running Cooper discoverer AT3 XLT - they are definitely the quietest all terrains I’ve had. I would recommend them if they are available in your size - many places like simpletire or priority tire carry them.”
r/ram_trucks ·22 upvotes ·2021-11-19

“New Cooper Discoverer AT3 XLT 275/75R20 these ride way better than my old Open Country A/T II”
r/f150 ·51 upvotes ·2021-12-30

“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
Top themes
#low road noise#tread longevity and wear#snow and winter traction#tire sizing and fitment#ride quality and comfort#towing performance

Based on 13 community posts

Tire B

Cooper WeatherMaster SA2+

We haven't collected enough community discussion about this tire yet.

Specs side by side

Attribute A · Cooper Discoverer AT3 XLT B · Cooper WeatherMaster SA2+
CategoryAll-Terrain tireWinter
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available4—
Rim diameters16″ – 20″—
Tread depth16 - 18/32″—
Treadwear warranty60,000 mi—
SidewallBlack Side Wall - Raised White Lettering—
Max pressure35 - 80 psi—

Which one should you actually buy?

Cooper Discoverer AT3 XLT

Cooper WeatherMaster SA2+

Winner: Cooper Discoverer AT3 XLT — better dry, handling and snow. It leads or ties in every category we score.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 79 vs 53 on dry.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 XLT scores 78 vs 53 on handling.

Pick tire A You drive through snowy winters

Cooper Discoverer AT3 XLT scores 71 vs 53 on snow.

Pick tire A You want the longest tread life

Cooper Discoverer AT3 XLT scores 74 vs 56 on treadwear.

Tire A · Cooper Discoverer AT3 XLT
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Tire B · Cooper WeatherMaster SA2+
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Discoverer AT3 XLT or WeatherMaster SA2+?

Which is better in the wet, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 83 vs 75 on our wet score.

Which grips better on dry roads, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 79 vs 53 on our dry score.

Which is better in snow, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 71 vs 53 on our snow score.

Which is quieter, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 73 vs 62 on our noise score.

Which is more comfortable, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 77 vs 64 on our comfort score.

Which lasts longer, Discoverer AT3 XLT or WeatherMaster SA2+?

Cooper Discoverer AT3 XLT, 74 vs 56 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