Tests – · none yet Owners 82 · 800 reviews
“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
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 800 + 251 owner reviews. How we score
Too close to call: Discoverer AT3 XLT 78, Discoverer AT3 LT 77.
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Tests – · none yet Owners 82 · 800 reviews
“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
Tests – · none yet Owners 81 · 251 reviews
“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.”
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 76 (est.) | ≈ 76 (est.) |
| Reviews found online | 86 | 86 |
Discoverer AT3 XLT: 60% × 75.6 (est.) + 40% × 86 = 80
Discoverer AT3 LT: 60% × 75.8 (est.) + 40% × 86.4 = 80
No road tests of dry for Discoverer AT3 XLT. 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).
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 80 (est.) | ≈ 79 (est.) |
| Reviews found online | 88 | 86 |
Discoverer AT3 XLT: 60% × 80.1 (est.) + 40% × 87.7 = 83
Discoverer AT3 LT: 60% × 79.1 (est.) + 40% × 85.9 = 82
No road tests of wet for Discoverer AT3 XLT. 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 | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 71 (est.) | ≈ 73 (est.) |
| Reviews found online | 72 | 77 |
Discoverer AT3 XLT: 60% × 71.3 (est.) + 40% × 72.2 = 72
Discoverer AT3 LT: 60% × 73 (est.) + 40% × 76.6 = 74
No road tests of snow for Discoverer AT3 XLT. 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).
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 71 (est.) | ≈ 71 (est.) |
| Reviews found online | 81 | 77 |
Discoverer AT3 XLT: 40% × 71.3 (est.) + 60% × 80.9 = 77
Discoverer AT3 LT: 40% × 70.5 (est.) + 60% × 76.6 = 74
No road tests of comfort for Discoverer AT3 XLT or Discoverer AT3 LT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 67 (est.) | ≈ 67 (est.) |
| Reviews found online | 83 | 81 |
Discoverer AT3 XLT: 60% × 66.6 (est.) + 40% × 82.7 = 73
Discoverer AT3 LT: 60% × 66.6 (est.) + 40% × 80.6 = 72
No road tests of noise for Discoverer AT3 XLT or Discoverer AT3 LT. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Professional tests (TWG score) | ≈ 71 (est.) | ≈ 71 (est.) |
| Reviews found online | 79 | 79 |
Discoverer AT3 XLT: 60% × 70.7 (est.) + 40% × 79.3 = 74
Discoverer AT3 LT: 60% × 70.6 (est.) + 40% × 79 = 74
No road tests of treadwear for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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).
| Source | Discoverer AT3 XLT | Discoverer AT3 LT |
|---|---|---|
| Reviews found online | 78 | 71 |
| Category | Cooper Discoverer AT3 XLT | Cooper Discoverer AT3 LT |
|---|---|---|
| Relative Score | 78 | 77 |
| Dry | 80 | 80 |
| Wet | 83 | 82 |
| Snow | 72 | 74 |
| Comfort | 77 | 74 |
| Noise | 73 | 72 |
| Treadwear | 74 | 74 |
| Handling (owners) | 78 | 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.
Discoverer AT3 XLT
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 members report high satisfaction with the Cooper Discoverer AT3 XLT, highlighting its quiet ride, long tread life, and strong winter performance. Several owners praise its smooth ride quality and durability under towing conditions compared to rival all-terrain tires. Discussion also commonly centers around sizing, fitment, and snow ratings.
“Cooper Discoverer AT3 XLT Picked up a set of Discoverer AT3 XLT from simple tire. With the 4th of July discounts all 4 were under 1k before taxes. I had the AT3 4S on a previous ram and they held up so I’m expecting good things here.”
“Are my Discoverer AT3 XLT snow rated? Going snowboarding and roads require snow tires or chains /cables. I was looking at the sidewall of my Cooper Discoverer XLT and saw there is a small M+S next to the tire size. Is it stupid to assume these are snow rated? I'm not trying to get a ticket for not having chains if I need them, which most places seem to be sold out locally.”
“Quote: Originally Posted by Stadt This was while I was running a ReadyLift 2.25" level only. The ride was good with only the level, just normal body roll and bed hop. Upgrading to the Bilstein 6112 and 5160 made the truck handle much better. You can gain this same set up with Bilsteins as well. The 285/65R20 did not rub unless the suspension was flexed, but under normal driving conditions, no issues. This tire size is perfect for a 2" level while running the stock wheels. Aftermarket wheels will require a smaller size, 275/65R20 is typically largest before significant rubbing. Thanks for the reply. I actually read through your entire build thread last night. Wow. Awesome stuff there. Im planning on keeping the OEM Platinum trim 20 wheels. So I could run the Discoverer AT3 XLT 275/65 R20 without any rub at all with either a 2 spacer level or something like this kit from Fox? I dont want to trim anything and dont want any rub even when suspension is flexed. It seems like most info online indicates a 33 tire is the max for a 2 level and no rubbing. I believe the 275/65 R20 is a 34 tire. Thanks for the advice!”
Based on 13 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 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”
“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...”
Based on 5 community posts
| Attribute | A · Cooper Discoverer AT3 XLT | B · Cooper Discoverer AT3 LT |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 4 | 14 |
| Rim diameters | 16″ – 20″ | 16″ – 18″ |
| Tread depth | 16 - 18/32″ | 16 - 17/32″ |
| Treadwear warranty | 60,000 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 | 0 | 0 |
Cooper Discoverer AT3 XLT
Cooper Discoverer AT3 LT
Too close to call: Cooper Discoverer AT3 XLT and Cooper Discoverer AT3 LT are within 2 points overall. Cooper Discoverer AT3 XLT is stronger on handling and comfort.
Cooper Discoverer AT3 XLT scores 78 vs 71 on handling.
Cooper Discoverer AT3 XLT scores 77 vs 74 on comfort.
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Neither, by our numbers: 83 vs 82 on the wet score, within 3 points.
Neither, by our numbers: 80 vs 80 on the dry score, within 3 points.
Neither, by our numbers: 72 vs 74 on the snow score, within 3 points.
Neither, by our numbers: 73 vs 72 on the noise score, within 3 points.
Cooper Discoverer AT3 XLT, 77 vs 74 on our comfort score.
Neither, by our numbers: 74 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