Head-to-head Updated

Cooper Discoverer AT3 4S vs Toyo Proxes ST — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 1 + 0 road tests and 688 + 14 owner reviews. How we score

Discoverer AT3 4S is ahead, 77–71

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Cooper Discoverer AT3 4S
Tire ACooper

Discoverer AT3 4S

All-Terrain tire

Tests – · 1 test Owners 81 · 688 reviews

Best test result: #5 of 18 in 2022 Consumer Reports All Terrain Truck Tires (tested tread life (miles))

“Got some 225/75/16 Cooper Discoverer AT3 4s - Great fit on stock setup.”

Toyo Proxes ST
Tire BToyo

Proxes ST

All Season

Provisional

Tests – · none yet Owners 73 · 14 reviews

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 +6
    72
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score)≈ 74 (est.)≈ 71 (est.)
    Reviews found online8475

    Discoverer AT3 4S: 60% × 74.3 (est.) + 40% × 84 = 78

    Proxes ST: 60% × 70.5 (est.) + 40% × 74.7 = 72

    No road tests of dry for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 81

    Wet

    Discoverer AT3 4S +6
    75
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score)≈ 78 (est.)≈ 74 (est.)
    Reviews found online8577

    Discoverer AT3 4S: 60% × 78.5 (est.) + 40% × 85.3 = 81

    Proxes ST: 60% × 73.6 (est.) + 40% × 76.6 = 75

    No road tests of wet for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 72

    Snow

    Discoverer AT3 4S +6
    66
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score)≈ 71 (est.)≈ 68 (est.)
    Reviews found online7364

    Discoverer AT3 4S: 60% × 71 (est.) + 40% × 73.3 = 72

    Proxes ST: 60% × 67.8 (est.) + 40% × 63.6 = 66

    No road tests of snow for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

    No road tests of snow for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 76

    Comfort

    Discoverer AT3 4S +4
    72
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score)≈ 71 (est.)≈ 70 (est.)
    Reviews found online8274

    Discoverer AT3 4S: 60% × 71.4 (est.) + 40% × 82.3 = 76

    Proxes ST: 60% × 70 (est.) + 40% × 74.1 = 72

    No road tests of comfort for Discoverer AT3 4S or Proxes ST. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 73

    Noise

    No comparison
    –
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online81–

    Discoverer AT3 4S: 60% × 67.3 (est.) + 40% × 80.9 = 73

    No road tests of noise for Discoverer AT3 4S. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 73

    Treadwear

    Discoverer AT3 4S +4
    69
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Professional tests (TWG score) · 1 / – tests71≈ 67 (est.)
    Reviews found online7772

    Discoverer AT3 4S: 60% × 70.9 + 40% × 77 = 73

    Proxes ST: 60% × 67.5 (est.) + 40% × 71.7 = 69

    No road tests of treadwear for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 77

    Handling (owners)

    Discoverer AT3 4S +6
    71
    Why this score
    SourceDiscoverer AT3 4SProxes ST
    Reviews found online7771
Scores at a glance
Cooper Discoverer AT3 4S vs Toyo Proxes ST: scores by category (0–100)
CategoryCooper Discoverer AT3 4SToyo Proxes ST
Relative Score 77 71
Dry 78 72
Wet 81 75
Snow 72 66
Comfort 76 72
Noise 73 –
Treadwear 73 69
Handling (owners) 77 71

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

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score

Discoverer AT3 4S

Proxes ST

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 Proxes ST

Pros

  • Exceptional tread life and long-term durability
  • Quiet and comfortable ride quality compared to other brands and run-flats
  • Strong dry and wet grip with good resistance to aquaplaning

Cons

  • Poor performance and limited traction in snow and ice
  • A small number of users experienced disappointing treadwear and longevity
  • Conflicting feedback regarding wet grip, with isolated reports of poor performance
All owner themes in the Proxes ST 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/tires ·1 upvote ·2026-09-08

“Tire Recs for F150 - mostly highway and some muddy field edges - Cooper or Falken? I mostly put highway miles on my 2011 F150 but Im a bow hunter so October and November I spend a decent amount of time driving on field edges to get to hinting spots. When its wet, these field edges get pretty sloppy. I have Cooper Discoverer AT3 4S currently. While Ive never gotten stuck, there's been a few sweaty moments where it felt close. These have been great on road tires with low road noise, great fuel efficiency, and impressive handling in wet, dry, and snow. I want to maintain on road performance as thats 90% of my use, but curious if there are any thoughts on the new Cooper Discoverer Road + Trail AT, vs Falken Rubitrek, or Falken Wildpeak AT3 or AT4. Im leaning going Coopers again and hoping for the best on those occasional muddy mornings. Let me know thoughts and experiences. Read more”

ramforum.com ·2023-01-27

“Installed new Cooper Discoverer AT3 4s tires on my 1500 today. Took off a set that I put on three years ago when the stock tires wore out. I think I got good performance from the first set, but they didn't last as long as I would have hoped. They were getting pretty close to the wear bars, so had some life left. The guy at the tire shop estimated that I would get another 10000 miles out of them. They had a little less than 40 K miles. We got a bit of snow here this week, and I could tell that they were not gripping nearly as well as they did before. If it was spring/summer, they would have stayed on the truck. I will be driving to Maine next week, pulling a snowmobile trailer, so I decided that it was time to buy now, rather than risking a wreck. New tires look similar to the old ones. Still made in USA (good), no longer available with white letters, black wall only, in cast that is important to you.”

f150forum.com

“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!”

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

Toyo Proxes ST

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

Specs side by side

Attribute A · Cooper Discoverer AT3 4S B · Toyo Proxes ST
CategoryAll-Terrain tireAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available141
Rim diameters15″ – 22″19″
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

Toyo Proxes ST

Winner: Cooper Discoverer AT3 4S — better dry, wet and snow. It leads or ties in every category we score. Toyo Proxes ST rests on little evidence so far (0 tests, 14 reviews), so read this result as provisional.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 4S scores 78 vs 72 on dry.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 4S scores 81 vs 75 on wet.

Pick tire A You drive through snowy winters

Cooper Discoverer AT3 4S scores 72 vs 66 on snow.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 4S scores 77 vs 71 on handling.

Tire A · Cooper Discoverer AT3 4S
Tire B · Toyo Proxes ST

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Discoverer AT3 4S or Proxes ST?

Which is better in the wet, Discoverer AT3 4S or Proxes ST?

Cooper Discoverer AT3 4S, 81 vs 75 on our wet score.

Which grips better on dry roads, Discoverer AT3 4S or Proxes ST?

Cooper Discoverer AT3 4S, 78 vs 72 on our dry score.

Which is better in snow, Discoverer AT3 4S or Proxes ST?

Cooper Discoverer AT3 4S, 72 vs 66 on our snow score.

Which is more comfortable, Discoverer AT3 4S or Proxes ST?

Cooper Discoverer AT3 4S, 76 vs 72 on our comfort score.

Which lasts longer, Discoverer AT3 4S or Proxes ST?

Cooper Discoverer AT3 4S, 73 vs 69 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