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Cooper Discoverer AT3 4S vs Firestone All Season — Compared

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

Discoverer AT3 4S is ahead, 76–65

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Tire ACooper

Discoverer AT3 4S

All Season

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))

“They Discontinued My Tire! I've been using Cooper Discoverer AT3 4s forever. For some reason Cooper, in it's infinite wisdom, has discontinued the 265 75r 16 size so I need a replacment. I'm in Southern California and do quite a bit of wildlife habitat restoration work in dry desert conditions. This involves lots and lots of highway miles as well as dirt roads from good to, on what planet is this a road. Occasionally we are even driving up dry washes, trying to avoid all the nasty sidewall eating rocks and spiny bushes. The tread on the discoverer is pretty modest and quite on the highway but when aired downed, runs well in sandy conditions. They even work pretty well in rocky conditions. The other thing is they wear really well. Ive got 60k+ miles on my current set and can squeeze another 10k out of them if I have to. So to the point, Im looking for suggestions for a replacment. Any help would be greatly appreciated.”

Tire BFirestone

All Season

All Season Touring tires

Tests – · 1 test Owners 64 · 42 reviews

Best test result: #5 of 8 in 2022 Consumer Reports All-Season Tires (tested tread life (miles))

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 +11
    67
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online8466
  2. 82

    Wet

    Discoverer AT3 4S +14
    68
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online8668
  3. 72

    Snow

    Discoverer AT3 4S +8
    64
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online7461
  4. 76

    Comfort

    Discoverer AT3 4S +11
    65
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online8361
  5. 72

    Noise

    Discoverer AT3 4S +6
    66
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online8165
  6. 73

    Treadwear

    Discoverer AT3 4S +7
    66
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Professional tests (TWG score)7167
    Reviews found online7765
  7. 77

    Handling

    Discoverer AT3 4S +20
    57
    Why this score
    SourceDiscoverer AT3 4SAll Season
    Reviews found online7757
Scores at a glance
CategoryCooper Discoverer AT3 4SFirestone All Season
Relative Score 76 65
Dry 78 67
Wet 82 68
Snow 72 64
Comfort 76 65
Noise 72 66
Treadwear 73 66
Handling 77 57

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

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Recomputed
Headline score

Discoverer AT3 4S

All Season

The professional test results behind the scores

Each result is shown as % of the best tire in that test. “Same test” rows are the strictest comparison: both tires were measured side by side.

DisciplineCategoryDiscoverer AT3 4SAll SeasonΔBoth?
Tested Tread Life (Miles) Other 60% #5/18 · 2022 Consumer Reports All Terrain Truck Tires 76% #5/8 · 2022 Consumer Reports All-Season Tires −16.5 Different tests
Overall Ranking Overall 76% #5/18 · 2022 Consumer Reports All Terrain Truck Tires 29% #6/8 · 2022 Consumer Reports All-Season Tires +47.9 Different tests

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 All Season

Not enough owner reviews yet to extract themes.

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/HondaElement ·74 upvotes ·2021-02-15

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

Firestone All Season

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

Specs side by side

Attribute A · Cooper Discoverer AT3 4S B · Firestone All Season
CategoryAll SeasonAll Season Touring tires
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available1462
Rim diameters15″ – 22″14″ – 20″
Tread depth12 - 14/32″10/32″
UTQG620 A B560 A B
Treadwear warranty65,000 mi65,000 mi
SidewallBlack Side Wall - Raised Outline White LetteringBlackwall
Max pressure44 - 50 psi44 psi

Which one should you actually buy?

Cooper Discoverer AT3 4S

Firestone All Season

Winner: Cooper Discoverer AT3 4S — better handling, wet and dry. It leads or ties in every category we score.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 4S scores 77 vs 57 on handling.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 4S scores 82 vs 68 on wet.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 4S scores 78 vs 67 on dry.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 4S scores 76 vs 65 on comfort.

Tire A · Cooper Discoverer AT3 4S
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Tire B · Firestone All Season
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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.

76

Leads

Discoverer AT3 4S

Amazon