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General Grabber APT vs Cooper Discoverer AT3 LT — 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 + 0 road tests and 82 + 251 owner reviews. How we score

Discoverer AT3 LT is ahead, 77–68

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General Grabber APT
Tire AGeneral

Grabber APT

All-Terrain tire

± 7

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))

Cooper Discoverer AT3 LT
Tire BCooper

Discoverer AT3 LT

All-Terrain tire

± 7

Tests – · none yet Owners 81 · 251 reviews

“I got 80k (rotating every 10k) out of Coopers on my 2010 and have 40k on current 2019 SL ... Discoverer AT3 LT ... they are designed for heavier trucks... excellent noise, excellent in water. I got stuck in a grass field in the factory HT hancocks... same field few years later with coopers.. no issues.. never tried in snow but imagine they would do well...”

Category by category

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

  1. 67

    Dry

    Discoverer AT3 LT +13
    80
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score)≈ 68 (est.)≈ 76 (est.)
    Reviews found online6786

    Grabber APT: 60% × 67.6 (est.) + 40% × 67 = 67

    Discoverer AT3 LT: 60% × 75.8 (est.) + 40% × 86.3 = 80

    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 0.42).

    No road tests of dry for Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 74

    Wet

    Discoverer AT3 LT +8
    82
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score)≈ 73 (est.)≈ 79 (est.)
    Reviews found online7586

    Grabber APT: 60% × 73.3 (est.) + 40% × 75.4 = 74

    Discoverer AT3 LT: 60% × 79.1 (est.) + 40% × 85.8 = 82

    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).

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

  3. 67

    Snow

    Discoverer AT3 LT +7
    74
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score)≈ 68 (est.)≈ 73 (est.)
    Reviews found online6577

    Grabber APT: 60% × 68.4 (est.) + 40% × 64.5 = 67

    Discoverer AT3 LT: 60% × 73 (est.) + 40% × 76.6 = 74

    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 0.37).

    No road tests of snow for Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

  4. 64

    Comfort

    Discoverer AT3 LT +10
    74
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score)≈ 68 (est.)≈ 70 (est.)
    Reviews found online6177

    Grabber APT: 40% × 67.6 (est.) + 60% × 60.8 = 64

    Discoverer AT3 LT: 40% × 70.5 (est.) + 60% × 76.6 = 74

    No road tests of comfort for Grabber APT or Discoverer AT3 LT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 61

    Noise

    Discoverer AT3 LT +11
    72
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online5381

    Grabber APT: 60% × 66.6 (est.) + 40% × 52.9 = 61

    Discoverer AT3 LT: 60% × 66.6 (est.) + 40% × 80.5 = 72

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

  6. 70

    Treadwear

    Discoverer AT3 LT +4
    74
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Professional tests (TWG score) · 1 / – tests71≈ 71 (est.)
    Reviews found online6879

    Grabber APT: 60% × 71.1 + 40% × 68.4 = 70

    Discoverer AT3 LT: 60% × 70.6 (est.) + 40% × 78.8 = 74

    No road tests of treadwear for Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

  7. 58

    Handling (owners)

    Discoverer AT3 LT +13
    71
    Why this score
    SourceGrabber APTDiscoverer AT3 LT
    Reviews found online5871
Scores at a glance
CategoryGeneral Grabber APTCooper Discoverer AT3 LT
Relative Score 68 77
Dry 67 80
Wet 74 82
Snow 67 74
Comfort 64 74
Noise 61 72
Treadwear 70 74
Handling (owners) 58 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
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Neutral
NotLessNeutralImportantMost
Less important
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Recomputed
Headline score
± 7

Grabber APT

± 7

Discoverer AT3 LT

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A 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
All owner themes in the Grabber APT review

Tire B Discoverer AT3 LT

Pros

  • Excellent towing stability with minimal sidewall flex under heavy loads
  • Surprisingly quiet and smooth on the highway for an all-terrain tire
  • Strong durability and wear resistance on rough gravel, rock, and dirt roads

Cons

  • Subpar performance in heavy snow, ice, or deep mud for some users
  • Occasional reports of balancing difficulties or initial cold-weather tire thumping
  • Isolated incidents of sidewall splitting or premature wear
All owner themes in the Discoverer AT3 LT review

What real owners are saying

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

Tire A

General Grabber APT

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

Tire B

Cooper Discoverer AT3 LT

Mixed

Community sentiment regarding the Cooper Discoverer AT3 LT is mixed with a positive lean. Drivers appreciate its wet and snow traction, low noise, and strong tread life under heavy loads, though some report irregular wear and persistent balancing or vibration issues after accumulating mileage.

clubfrontier.org ·2 upvotes ·2023-02-26

“I got 80k (rotating every 10k) out of Coopers on my 2010 and have 40k on current 2019 SL ... Discoverer AT3 LT ... they are designed for heavier trucks... excellent noise, excellent in water. I got stuck in a grass field in the factory HT hancocks... same field few years later with coopers.. no issues.. never tried in snow but imagine they would do well...”
hdrams.com ·1 upvote ·2026-01-17

“I ran a set of 295/70r18 Discoverer AT3 LT’s for about 25k miles. I had seen lots of negative reviews but figured that I would be OK with them for my needs ( I drive in snow 4 - 5 times per year). Initially I was happy with the tires as they performed well in the snow and the rain but after 10k miles they developed a balance issue and started to wear irregularly. I had never experienced anything like it before. I actually purchased new shocks but never installed them. As I drive a lot of miles I just never had any time to deal with chasing the vibration / balance issue and just replaced the tires with Bridgestone Dueler AT Ascent. I now have about 20k miles on the Bridgestone’s and they are still ride very smooth and are wearing great.”
wanderthewest.com ·2020-07-08

“I have the Cooper Discoverer AT3 LT tires on my 2010 Tundra with Hawk. They are E series tires. Found this link that discusses the differences between the LT and XLT. Really like my LT's. The increased tire mileage would probably be a good thing of the price difference isn't too great. Paul”
Top themes
#Wet traction performance#Treadwear and longevity#Heavy load handling#Balancing and vibration#Snow traction capability

Based on 5 community posts

Specs side by side

Attribute A · General Grabber APT B · Cooper Discoverer AT3 LT
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available2514
Rim diameters16″ – 22″16″ – 18″
Tread depth12 - 16/32″16 - 17/32″
UTQG360 - 740 A - AA A - B—
Treadwear warranty60,000 mi60,000 mi
SidewallBlack Side Wall - Raised Outline White LetteringBlack Side Wall - Raised Outline White Lettering
Max pressure44 - 90 psi50 - 80 psi
Sizes in common99

Which one should you actually buy?

General Grabber APT

Cooper Discoverer AT3 LT

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

Pick tire B You want the most grip on dry roads

Cooper Discoverer AT3 LT scores 80 vs 67 on dry.

Pick tire B You enjoy sharp, responsive handling

Cooper Discoverer AT3 LT scores 71 vs 58 on handling.

Pick tire B You want a quieter cabin

Cooper Discoverer AT3 LT scores 72 vs 61 on noise.

Pick tire B You want the most comfortable ride

Cooper Discoverer AT3 LT scores 74 vs 64 on comfort.

Tire A · General Grabber APT
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Tire B · Cooper Discoverer AT3 LT
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Grabber APT or Discoverer AT3 LT?

Which is better in the wet, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 82 vs 74 on our wet score.

Which grips better on dry roads, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 80 vs 67 on our dry score.

Which is better in snow, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 74 vs 67 on our snow score.

Which is quieter, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 72 vs 61 on our noise score.

Which is more comfortable, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 74 vs 64 on our comfort score.

Which lasts longer, Grabber APT or Discoverer AT3 LT?

Cooper Discoverer AT3 LT, 74 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