Tests – · none yet Owners 82 · 800 reviews
“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
Head-to-head
Updated
Cooper Discoverer AT3 XLT vs Firestone Transforce AT2 — 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 0 + 0 road tests and 800 + 17 owner reviews. How we score
Discoverer AT3 XLT is ahead, 78–70
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests – · none yet Owners 71 · 17 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
79
Dry
Discoverer AT3 XLT +1069Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 75 (est.) ≈ 69 (est.) Reviews found online 86 70 Discoverer AT3 XLT: 60% × 75.4 (est.) + 40% × 85.6 = 79
Transforce AT2: 60% × 68.8 (est.) + 40% × 69.8 = 69
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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
83
Wet
Discoverer AT3 XLT +1172Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 80 (est.) ≈ 72 (est.) Reviews found online 87 72 Discoverer AT3 XLT: 60% × 79.8 (est.) + 40% × 87.4 = 83
Transforce AT2: 60% × 71.5 (est.) + 40% × 72.1 = 72
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 0.54).
No road tests of wet for Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
-
71
Snow
Transforce AT2 +172Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 71 (est.) ≈ 71 (est.) Reviews found online 72 73 Discoverer AT3 XLT: 60% × 70.7 (est.) + 40% × 71.5 = 71
Transforce AT2: 60% × 71 (est.) + 40% × 72.6 = 72
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 0.32).
No road tests of snow for Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
-
77
Comfort
Discoverer AT3 XLT +1760Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 71 (est.) ≈ 67 (est.) Reviews found online 81 55 Discoverer AT3 XLT: 40% × 71.2 (est.) + 60% × 80.6 = 77
Transforce AT2: 40% × 66.6 (est.) + 60% × 55.1 = 60
No road tests of comfort for Discoverer AT3 XLT or Transforce AT2. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
73
Noise
Discoverer AT3 XLT +469Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 67 (est.) ≈ 67 (est.) Reviews found online 82 74 Discoverer AT3 XLT: 60% × 66.5 (est.) + 40% × 82.3 = 73
Transforce AT2: 60% × 66.5 (est.) + 40% × 73.6 = 69
No road tests of noise for Discoverer AT3 XLT or Transforce AT2. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
75
Treadwear
Discoverer AT3 XLT +471Why this score
Source Discoverer AT3 XLT Transforce AT2 Professional tests (TWG score) ≈ 71 (est.) ≈ 69 (est.) Reviews found online 80 75 Discoverer AT3 XLT: 60% × 71.1 (est.) + 40% × 79.6 = 75
Transforce AT2: 60% × 69.3 (est.) + 40% × 74.5 = 71
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 Transforce AT2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
78
Handling (owners)
No comparison–Why this score
Source Discoverer AT3 XLT Transforce AT2 Reviews found online 78 –
Scores at a glance
| Category | Cooper Discoverer AT3 XLT | Firestone Transforce AT2 |
|---|---|---|
| Relative Score | 78 | 70 |
| Dry | 79 | 69 |
| Wet | 83 | 72 |
| Snow | 71 | 72 |
| Comfort | 77 | 60 |
| Noise | 73 | 69 |
| Treadwear | 75 | 71 |
| Handling (owners) | 78 | – |
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
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
78
/ 100
Discoverer AT3 XLT
70
/ 100
Transforce AT2
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Discoverer AT3 XLT
Pros
- Significantly lower road noise than comparable aggressive all-terrain tires
- Excellent wet weather, snow, and slush traction
- Sturdy sidewalls and stable performance when towing heavy loads
Cons
- Some users report difficulty with balancing, leading to vibrations or a rough ride
- Tread life occasionally falls short of expectations for certain drivers
- Can struggle or get gummed up in deep mud
Tire B Transforce AT2
Pros
- Excellent value and competitive price point for a commercial line tire
- Quiet on-road operation despite the deep, aggressive tread design
- Reliable durability and high mileage potential based on long-term user history
Cons
- Prone to highway wandering and tracking grooves or ridges in the road
- Difficulty in achieving proper road balance, causing high-speed vibrations
- Unstable or 'floaty' feel at highway speeds for specific heavy-duty applications
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Positive
Cooper Discoverer AT3 XLT
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.
r/overlanding
·2 upvotes ·2026-09-28
“Cooper adventurer (pep boys exclusive version of the discoverer), and then Cooper discoverer at3 xlt have been the tires on my tundra for the last +10yrs. I have put 80-100k on each set. I tow a smaller camp trailer regularly. They discontinued that tire, so I'm going to try the stronghold AT next.”
f150forum.com
“Quote: Originally Posted by SodiumMonkey 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! I only ever rubbed with my 285/65R20s when I was reversing and turning right down an angled driveway, on the street and flat ground it never rubbed. Offroad is where I had the most rubbing but that is expected. A 275/65R20 is what a lot of people run with only a 2 inch level. It fills the wheel wells nice and it will very rarely rub in any on road circumstance, no matter how you level the truck. A 33" tire is too small in my personal opinion.”
cumminsforum.com
·2024-08-31
“I figure any tire review is good, even if late. I'm nearing the end of use for Cooper Discoverer AT3 XLT in LT275/70R18E 125S on OE 18x8" chrome clad wheels. They have been fantastic tires , great in the snow, quiet, never felt like they were giving up any traction except for the fourth (last) winter, but they never felt dangerous. They wore dead flat across the tread, kept the fronts at 65# and rears at 75#, rotated about every 5k miles, used Thuren alignment specs. They made 50k miles (the warranty in 2020) no problem. I have no problem getting them again or recommending them, but I like trying something different. If the different tires I chose this time don't work out (45 days), I'll just get these Coopers again.”
Top themes
#low road noise#tread longevity and wear#snow and winter traction#tire sizing and fitment#ride quality and comfort#towing performance
Based on 13 community posts
Tire B
Firestone Transforce AT2
We haven't collected enough community discussion about this tire yet.
Specs side by side
| Attribute | A · Cooper Discoverer AT3 XLT | B · Firestone Transforce AT2 |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 4 | 17 |
| Rim diameters | 16″ – 20″ | 16″ – 20″ |
| Tread depth | 16 - 18/32″ | 32/32″ |
| Treadwear warranty | 60,000 mi | — |
| Sidewall | Black Side Wall - Raised White Lettering | Outlined White Lettering |
| Max pressure | 35 - 80 psi | 80 psi |
| Sizes in common | 1 | 1 |
Which one should you actually buy?
78
/ 100
Cooper Discoverer AT3 XLT
70
/ 100
Firestone Transforce AT2
Winner: Cooper Discoverer AT3 XLT — better comfort, wet and dry. Where the Firestone Transforce AT2 is ahead, it is by less than 3 points. Firestone Transforce AT2 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.
Pick tire A
You want the most comfortable ride
Cooper Discoverer AT3 XLT scores 77 vs 60 on comfort.
Pick tire A
Your priority is wet-weather safety
Cooper Discoverer AT3 XLT scores 83 vs 72 on wet.
Pick tire A
You want the most grip on dry roads
Cooper Discoverer AT3 XLT scores 79 vs 69 on dry.
Pick tire A
You want a quieter cabin
Cooper Discoverer AT3 XLT scores 73 vs 69 on noise.
Tire A · Cooper Discoverer AT3 XLT
Tire B · Firestone Transforce AT2
TireWheelGuide may earn a commission from purchases made through these links.
Discoverer AT3 XLT or Transforce AT2?
Which is better in the wet, Discoverer AT3 XLT or Transforce AT2?
Cooper Discoverer AT3 XLT, 83 vs 72 on our wet score.
Which grips better on dry roads, Discoverer AT3 XLT or Transforce AT2?
Cooper Discoverer AT3 XLT, 79 vs 69 on our dry score.
Which is better in snow, Discoverer AT3 XLT or Transforce AT2?
Neither, by our numbers: 71 vs 72 on the snow score, within 3 points.
Which is quieter, Discoverer AT3 XLT or Transforce AT2?
Cooper Discoverer AT3 XLT, 73 vs 69 on our noise score.
Which is more comfortable, Discoverer AT3 XLT or Transforce AT2?
Cooper Discoverer AT3 XLT, 77 vs 60 on our comfort score.
Which lasts longer, Discoverer AT3 XLT or Transforce AT2?
Cooper Discoverer AT3 XLT, 75 vs 71 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