Tests – · none yet Owners 73 · 1,586 reviews
“I like mine so much I'm on my second set. I got 55k out of my first set (could have got another 10k but started to get a little noisy). Exact tire you have (265/70-17 C load) on a 2018 4Runner.”
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 1,586 + 251 owner reviews. How we score
Discoverer AT3 LT is ahead, 77–71
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Tests – · none yet Owners 73 · 1,586 reviews
“I like mine so much I'm on my second set. I got 55k out of my first set (could have got another 10k but started to get a little noisy). Exact tire you have (265/70-17 C load) on a 2018 4Runner.”
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...”
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 70 (est.) | ≈ 75 (est.) |
| Reviews found online | 74 | 86 |
All-Terrain T/A KO2: 60% × 70.2 (est.) + 40% × 73.5 = 72
Discoverer AT3 LT: 60% × 75.4 (est.) + 40% × 86 = 80
No road tests of dry for All-Terrain T/A KO2. 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 Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 71 (est.) | ≈ 79 (est.) |
| Reviews found online | 70 | 85 |
All-Terrain T/A KO2: 60% × 70.5 (est.) + 40% × 70.4 = 70
Discoverer AT3 LT: 60% × 78.7 (est.) + 40% × 85.3 = 81
No road tests of wet for All-Terrain T/A KO2. 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).
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 72 (est.) | ≈ 72 (est.) |
| Reviews found online | 76 | 76 |
All-Terrain T/A KO2: 60% × 72.2 (est.) + 40% × 75.9 = 74
Discoverer AT3 LT: 60% × 72.3 (est.) + 40% × 76.1 = 74
No road tests of snow for All-Terrain T/A KO2. 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 Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 69 (est.) | ≈ 70 (est.) |
| Reviews found online | 69 | 75 |
All-Terrain T/A KO2: 40% × 68.6 (est.) + 60% × 68.5 = 69
Discoverer AT3 LT: 40% × 70 (est.) + 60% × 75.2 = 73
No road tests of comfort for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
No road tests of comfort for Discoverer AT3 LT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 66 (est.) | ≈ 66 (est.) |
| Reviews found online | 72 | 80 |
All-Terrain T/A KO2: 60% × 66.4 (est.) + 40% × 71.9 = 69
Discoverer AT3 LT: 60% × 66.4 (est.) + 40% × 80.4 = 72
No road tests of noise for All-Terrain T/A KO2 or Discoverer AT3 LT. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 70 (est.) | ≈ 71 (est.) |
| Reviews found online | 77 | 78 |
All-Terrain T/A KO2: 60% × 70.1 (est.) + 40% × 76.5 = 73
Discoverer AT3 LT: 60% × 70.7 (est.) + 40% × 78.2 = 74
No road tests of treadwear for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
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 0.36).
| Source | All-Terrain T/A KO2 | Discoverer AT3 LT |
|---|---|---|
| Reviews found online | 66 | 71 |
| Category | BFGoodrich All-Terrain T/A KO2 | Cooper Discoverer AT3 LT |
|---|---|---|
| Relative Score | 71 | 77 |
| Dry | 72 | 80 |
| Wet | 70 | 81 |
| Snow | 74 | 74 |
| Comfort | 69 | 73 |
| Noise | 69 | 72 |
| Treadwear | 73 | 74 |
| Handling (owners) | 66 | 71 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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.
All-Terrain T/A KO2
Discoverer AT3 LT
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
From Reddit, forums and review threads. Not part of our score
Community sentiment toward the BFGoodrich All-Terrain T/A KO2 is largely positive, with drivers frequently praising its aggressive styling, tough sidewalls, off-road durability, and solid general performance. Many owners report capable handling in snow, though several emphasize that it cannot replace a dedicated winter tire and can struggle on ice or packed snow. Criticisms center on high pricing, added weight hurting fuel economy, mud packing, occasional tread chunking, and difficulties with balancing causing highway vibrations.
“I’ve got KO2s on a 4Runner currently, and have ran 10 other sets in the past. Installed these KO3s on a GMC Sierra 1500 a couple months ago, and I’m up to 12K miles on them so far and adding another 3K miles to that this week. Also running Mickey Thomson Baja Boss ATs on my Tremor currently with about 12K on them as well. I’ve been thoroughly impressed with the KO2s durability, overall wear, and mileage on lighter vehicles such as half tons and the 4Runner. I haven’t been happy with them on HD trucks though. Traction isn’t as good on heavy vehicles off pavement, and mileage sucks. So far the KO3 has better wet pavement traction, so the same great traction off road on a lighter truck, and seems to be even quieter. We’ll see what I think I’m another 60K miles. I have yet to get less than 80K on a set of KO2s on a half ton, so I’m hoping the KO3 will do the same. The Mickeys have been a great tire for now. I’m not sure how well they’ll wear though. It seems to be noticeable tire wear already at 12K miles. However wet weather traction and snow has been fantastic. Minimal noise for a tire this aggressive. I’m just not convinced I’ll make it past 40K miles with them.”
“I really like my KO2s. Great traction in wet/dry/gravel/dirt conditions, not noisy on the pavement, they wear very evenly and my current set is coming up on 32K miles. The tires had 15/32" tread depth when new, I'm down to about 8/32" left, minimum tread is 4/32" so they're good for a little while yet. Won't hesitate to buy another set when the time comes.”
“FWIW, I had the same 18s that you have and went to a 16" Vision Cross wheel and wrapped them in 225/70 KO2s. I weighed the stock wheels and the new wheels and the new set is only 2 pounds heavier than stock at most. I don't notice much acceleration loss, but I really don't beat on my jeep either. I did notice a little "hum" once I'm going 30mph but it's nothing annoying at all and I don't even hear it anymore. I have also carefully measured MPGs with both set ups and I have not lost anything. This is calculated MPG, not just what the computer says and I do add an additional 2.5% due to the increase in tire circumference. My avg is 25.1 (25.73 when adding the 2.5%) and my commute is 75% hwy and 25% local. I was afraid to get the KO2s because of added weight, tire noise and mpg loss, but I was afraid for nothing. Just my 2 cents, but I remember reading most people talk about how bad things would be with these tires. I'm glad I listened to those who said mpg loss would be minimal at most. Mike”
Based on 395 community posts
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.
“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...”
“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.”
“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”
Based on 5 community posts
| Attribute | A · BFGoodrich All-Terrain T/A KO2 | B · Cooper Discoverer AT3 LT |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 49 | 14 |
| Rim diameters | 15″ – 20″ | 16″ – 18″ |
| Tread depth | 13 - 15/32″ | 16 - 17/32″ |
| Treadwear warranty | 50,000 mi | 60,000 mi |
| Sidewall | Black Side Wall - Raised White Lettering | Black Side Wall - Raised Outline White Lettering |
| Max pressure | 35 - 80 psi | 50 - 80 psi |
| Sizes in common | 9 | 9 |
BFGoodrich All-Terrain T/A KO2
Cooper Discoverer AT3 LT
Winner: Cooper Discoverer AT3 LT — better wet, dry and comfort. It leads or ties in every category we score.
Cooper Discoverer AT3 LT scores 81 vs 70 on wet.
Cooper Discoverer AT3 LT scores 80 vs 72 on dry.
Cooper Discoverer AT3 LT scores 73 vs 69 on comfort.
Cooper Discoverer AT3 LT scores 72 vs 69 on noise.
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Cooper Discoverer AT3 LT, 81 vs 70 on our wet score.
Cooper Discoverer AT3 LT, 80 vs 72 on our dry score.
Neither, by our numbers: 74 vs 74 on the snow score, within 3 points.
Cooper Discoverer AT3 LT, 72 vs 69 on our noise score.
Cooper Discoverer AT3 LT, 73 vs 69 on our comfort score.
Neither, by our numbers: 73 vs 74 on the treadwear score, within 3 points.
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