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Cooper Discoverer AT3 4S vs Cooper Discoverer MS — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Discoverer AT3 4S leads, 77–73 Narrow edge

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Tire ACooper

Discoverer AT3 4S

All Season

Tests – · 1 test Owners 81 · 688 reviews

“Quote: Originally Posted by ArizonaF1Fiddy I went with the Cooper Discoverer AT3 4s (275/65/18). The Michelin Primacy XC were on there when I purchased and they were terrible. I like the looks of the Coopers...the ride is much more controlled and a bit softer over broken surfaces. They do have some slip off the line of you give it full throttle real similar to the XCs. I was looking for an AT that would be great at hooking up in dry weather but probably not gong to find an AT that is sticky enough. They're brand-new so I'll give an update after a few hundred miles or so (I don't put a lot of miles so it'll take time). Thanks to the Forum for the info! This looks nice!”

Category by category

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

  1. 78

    Dry

    Discoverer AT3 4S +5
    73
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online8476
  2. 82

    Wet

    Discoverer AT3 4S +6
    76
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online8679
  3. 72

    Snow

    Discoverer MS +5
    77
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online7482
  4. 76

    Comfort

    Discoverer AT3 4S +8
    68
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online8367
  5. 72

    Noise

    No comparison
    –
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online81–
  6. 73

    Treadwear

    Discoverer AT3 4S +5
    68
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Professional tests (TWG score)71–
    Reviews found online7769
  7. 77

    Handling

    Discoverer AT3 4S +4
    73
    Why this score
    SourceDiscoverer AT3 4SDiscoverer MS
    Reviews found online7773
Scores at a glance
CategoryCooper Discoverer AT3 4SCooper Discoverer MS
Relative Score 77 73
Dry 78 73
Wet 82 76
Snow 72 77
Comfort 76 68
Noise 72 –
Treadwear 73 68
Handling 77 73

Higher is better. The Relative Score follows your weights below; category scores do not change.

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Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

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Recomputed
Headline score

Discoverer AT3 4S

Discoverer MS

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 4S

Pros

  • Exceptionally quiet and smooth on-road ride compared to typical all-terrain tires
  • Superb traction in wet, rainy, and deep winter snow conditions
  • Strong value and competitive pricing relative to performance and lifespan

Cons

  • Potential for accelerated tread wear under heavy off-road use or demanding mountain driving
  • Occasional reports of balancing issues or out-of-round tires requiring multiple adjustments
  • Minor fuel economy drop or increased rolling resistance when switching from standard highway tires
All owner themes in the Discoverer AT3 4S review

Tire B Discoverer MS

Pros

  • Exceptional traction in severe winter conditions including deep snow, ice, and slush
  • Strong off-road capabilities and mud performance unusual for a dedicated winter tire
  • Impressive tread life and overall longevity compared to competitors

Cons

  • Can develop significant road noise as the tires age
  • Potential for rough ride quality and vibrations if alignment or wear issues occur
  • Not quite equal to dedicated studded tires in extreme hardcore ice conditions without studs
All owner themes in the Discoverer MS review

What real owners are saying

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

Tire A

Cooper Discoverer AT3 4S

Positive

Community sentiment for the Cooper Discoverer AT3 4S is predominantly positive, with drivers praising its quiet highway ride, strong traction across snow, rain, and dry pavement, and appealing appearance. Several owners note that while it handles light off-road duties and daily driving well, tread life occasionally falls short of mileage expectations. In addition, multiple posts highlight frustration and concern regarding availability and recent discontinuation across various sizes.

r/DubaiPetrolHeads ·1 upvote ·2026-01-20

“Cooper Discoverer AT3 4s I am struggling to find Cooper Discoverer AT3 4s tyres with size 265/70/17. There seemed to be an acute shortage in the market. I am not keen on BF Goodrich due to the weight and price. I shall appreciate it if anyone with reliable leads for Cooper tyres. What else do you recommend if Cooper is just not realistically available? I can wait till March before I need to get my car tested for renewal of registration. TIA.”
r/JeepRenegade ·6 upvotes ·2020-08-24

“New tires: Cooper Discoverer AT3 4S Needed a 3PMSF tire and these Coopers edged out the Wildpeak AT3Ws based on wear rating and highway performance. Also, Cooper has a promo right now for a $70 mail in rebate. MPG has been about the same, maybe slightly better. Visually, I like them, more rugged than the stock Falkens. Highway and forest road driving has been solid. Stock size, 215/65R17, on a 2020 TH: Read more”
bobistheoilguy.com ·5 upvotes ·2020-09-02

“I went with Cooper Discoverer AT3 4S for the Touareg and couldn't be happier. Made in the USA to boot!”
Top themes
#Snow and wet traction#Quiet highway ride#Tread life and longevity#Discontinuation and availability#Comfortable ride quality#Mild off-road performance

Based on 27 community posts

Tire B

Cooper Discoverer MS

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

Specs side by side

Attribute A · Cooper Discoverer AT3 4S B · Cooper Discoverer MS
CategoryAll SeasonWinter
Vehicle typeSUV and 4x4—
Sizes available14—
Rim diameters15″ – 22″—
Tread depth12 - 14/32″—
UTQG620 A B—
Treadwear warranty65,000 mi—
SidewallBlack Side Wall - Raised Outline White Lettering—
Max pressure44 - 50 psi—

Which one should you actually buy?

Cooper Discoverer AT3 4S

Cooper Discoverer MS

Winner: Cooper Discoverer AT3 4S — better comfort, wet and dry. Pick the Cooper Discoverer MS if snow matters most to you.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 4S scores 76 vs 68 on comfort.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 4S scores 82 vs 76 on wet.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 4S scores 78 vs 73 on dry.

Pick tire A You want the longest tread life

Cooper Discoverer AT3 4S scores 73 vs 68 on treadwear.

Tire A · Cooper Discoverer AT3 4S
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Tire B · Cooper Discoverer MS
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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.

Community buzz from Reddit and forums is shown for context only — it never changes the score.

77

Narrow edge

Discoverer AT3 4S

Amazon