Tests – · 1 test Owners 84 · 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.”
Head-to-head
Updated
Cooper Discoverer AT3 4S vs General Grabber APT — 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 1 + 1 road tests and 688 + 82 owner reviews. How we score
Discoverer AT3 4S is ahead, 79–68
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Tests – · 1 test Owners 67 · 82 reviews
Best test result: #5 of 18 in 2022 Consumer Reports All Terrain Truck 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.
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81
Dry
Discoverer AT3 4S +1467Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) ≈ 76 (est.) ≈ 67 (est.) Reviews found online 88 67 Discoverer AT3 4S: 60% × 76.4 (est.) + 40% × 88.4 = 81
Grabber APT: 60% × 67.4 (est.) + 40% × 66.6 = 67
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 0.41).
No road tests of dry for Grabber APT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
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85
Wet
Discoverer AT3 4S +1174Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) ≈ 82 (est.) ≈ 73 (est.) Reviews found online 91 75 Discoverer AT3 4S: 60% × 81.5 (est.) + 40% × 90.5 = 85
Grabber APT: 60% × 73.2 (est.) + 40% × 75.2 = 74
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 0.55).
No road tests of wet for Grabber APT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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73
Snow
Discoverer AT3 4S +667Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) ≈ 72 (est.) ≈ 68 (est.) Reviews found online 75 64 Discoverer AT3 4S: 60% × 71.8 (est.) + 40% × 74.6 = 73
Grabber APT: 60% × 68.5 (est.) + 40% × 64 = 67
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 0.32).
No road tests of snow for Grabber APT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
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80
Comfort
Discoverer AT3 4S +1763Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) ≈ 72 (est.) ≈ 67 (est.) Reviews found online 85 60 Discoverer AT3 4S: 40% × 72 (est.) + 60% × 85.1 = 80
Grabber APT: 40% × 67 (est.) + 60% × 60.2 = 63
No road tests of comfort for Discoverer AT3 4S or Grabber APT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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73
Noise
Discoverer AT3 4S +1261Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) ≈ 66 (est.) ≈ 66 (est.) Reviews found online 83 53 Discoverer AT3 4S: 60% × 66.5 (est.) + 40% × 83.2 = 73
Grabber APT: 60% × 66.5 (est.) + 40% × 52.6 = 61
No road tests of noise for Discoverer AT3 4S or Grabber APT. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
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75
Treadwear
Discoverer AT3 4S +570Why this score
Source Discoverer AT3 4S Grabber APT Professional tests (TWG score) · 1 / 1 tests 71 71 Reviews found online 80 69 Tested Tread Life (Miles) (% of best) · 1 shared test · wins 0–0 60% 60% Discoverer AT3 4S: 60% × 71.1 + 40% × 79.9 = 75
Grabber APT: 60% × 71.1 + 40% × 68.7 = 70
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80
Handling (owners)
Discoverer AT3 4S +2258Why this score
Source Discoverer AT3 4S Grabber APT Reviews found online 80 58
Scores at a glance
| Category | Cooper Discoverer AT3 4S | General Grabber APT |
|---|---|---|
| Relative Score | 79 | 68 |
| Dry | 81 | 67 |
| Wet | 85 | 74 |
| Snow | 73 | 67 |
| Comfort | 80 | 63 |
| Noise | 73 | 61 |
| Treadwear | 75 | 70 |
| Handling (owners) | 80 | 58 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
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
79
/ 100
Discoverer AT3 4S
68
/ 100
Grabber APT
The professional test results behind the scores
Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.
In the overall rankings of 1 tests that ran both, Cooper Discoverer AT3 4S finished ahead 1 times and General Grabber APT 0 times.
| Discipline | Category | Discoverer AT3 4S | Grabber APT | Δ | Head-to-head |
|---|---|---|---|---|---|
| Tested Tread Life (Miles) | Treadwear | 60% | 60% | 0.0 | 0–0 in 1 shared test Newest: 2022 Consumer Reports All Terrain Truck Tires · 215/60R17 |
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #5/18 | #6/18 | – | 1–0 in 1 shared test Newest: 2022 Consumer Reports All Terrain Truck Tires · 215/60R17 |
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
Tire B Grabber APT
Pros
- Excellent traction in wet, snowy, and light off-road conditions
- Quiet and comfortable ride quality for an all-terrain tire
- Attractive, rugged aesthetic that enhances vehicle appearance
Cons
- Difficulty in achieving proper wheel balance, leading to vibrations
- Inconsistent tread life reports, with some users experiencing premature wear
- Tendency to pick up and retain gravel in tread grooves
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Positive
Cooper Discoverer AT3 4S
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/4x4
·12 upvotes ·2026-07-08
“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.”
f150forum.com
“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!”
r/HondaElement
·74 upvotes ·2021-02-15
“Got some 225/75/16 Cooper Discoverer AT3 4s - Great fit on stock setup.”
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
General Grabber APT
We haven't collected enough community discussion about this tire yet.
Specs side by side
| Attribute | A · Cooper Discoverer AT3 4S | B · General Grabber APT |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 14 | 25 |
| Rim diameters | 15″ – 22″ | 16″ – 22″ |
| Tread depth | 12 - 14/32″ | 12 - 16/32″ |
| UTQG | 620 A B | 360 - 740 A - AA A - B |
| Treadwear warranty | 65,000 mi | 60,000 mi |
| Sidewall | Black Side Wall - Raised Outline White Lettering | Black Side Wall - Raised Outline White Lettering |
| Max pressure | 44 - 50 psi | 44 - 90 psi |
| Sizes in common | 8 | 8 |
Which one should you actually buy?
79
/ 100
Cooper Discoverer AT3 4S
68
/ 100
General Grabber APT
Winner: Cooper Discoverer AT3 4S — better handling, comfort and dry. It leads or ties in every category we score.
Pick tire A
You enjoy sharp, responsive handling
Cooper Discoverer AT3 4S scores 80 vs 58 on handling.
Pick tire A
You want the most comfortable ride
Cooper Discoverer AT3 4S scores 80 vs 63 on comfort.
Pick tire A
You want the most grip on dry roads
Cooper Discoverer AT3 4S scores 81 vs 67 on dry.
Pick tire A
You want a quieter cabin
Cooper Discoverer AT3 4S scores 73 vs 61 on noise.
Tire A · Cooper Discoverer AT3 4S
Tire B · General Grabber APT
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Discoverer AT3 4S or Grabber APT?
Which is better in the wet, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 85 vs 74 on our wet score.
Which grips better on dry roads, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 81 vs 67 on our dry score.
Which is better in snow, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 73 vs 67 on our snow score.
Which is quieter, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 73 vs 61 on our noise score.
Which is more comfortable, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 80 vs 63 on our comfort score.
Which lasts longer, Discoverer AT3 4S or Grabber APT?
Cooper Discoverer AT3 4S, 75 vs 70 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