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Head-to-head Updated September 2026

BFGoodrich Mud-Terrain T/A KM3 vs Cooper Discoverer AT3 XLT — Compared (September 2026)

Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.

Tire A BFGoodrich

BFGoodrich Mud-Terrain T/A KM3

All Terrain and Off Road All Season tire

BFGoodrich Mud-Terrain T/A KM3 tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
86/100
No reviews yet
Dry
84
Wet
94
Snow
90
Comfort
82
Noise
–
Treadwear
80
Handling
–
Check price on Amazon

Prices change daily — check the retailer for your size.

VS
Tire B Cooper

Cooper Discoverer AT3 XLT

Premium Touring All Season tire

Cooper Discoverer AT3 XLT tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
94/100
478 owner reviews
Dry
97
Wet
94
Snow
89
Comfort
93
Noise
93
Treadwear
93
Handling
94
Check price on Amazon

Prices change daily — check the retailer for your size.

VerdictWinner: Cooper Discoverer AT3 XLT — better dry, treadwear and comfort. It leads or ties in every category we score.
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Category breakdown

7 categories, side by side

Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.

Dry

Weight: Neutral
Score (0–100) Discoverer AT3 XLT leads by 13
A
84
B
97
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tire Rack owners 84 89
Tyre Reviews owners – 83
SimpleTire owners 93 98
America's Tire owners – 97

Wet

Weight: Important
Score (0–100)
A
94
B
94
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tire Rack owners 94 87
Tyre Reviews owners – 78
SimpleTire owners 91 97
America's Tire owners – 94

Snow

Weight: Neutral
Score (0–100) Mud-Terrain T/A KM3 leads by 1
A
90
B
89
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tire Rack owners 90 92
Tyre Reviews owners – 70
SimpleTire owners 87 90

Comfort

Weight: Neutral
Score (0–100) Discoverer AT3 XLT leads by 11
A
82
B
93
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tire Rack owners 82 83
Tyre Reviews owners – 88
SimpleTire owners 91 96
America's Tire owners – 93

Noise

Weight: Neutral
Score (0–100)
A
–
B
93
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
SimpleTire owners 84 92
America's Tire owners – 93

Treadwear

Weight: Important
Score (0–100) Discoverer AT3 XLT leads by 13
A
80
B
93
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tire Rack owners 80 87
Tyre Reviews owners – 78
SimpleTire owners 93 91
America's Tire owners – 93

Handling

Weight: Neutral
Score (0–100)
A
–
B
94
Why this score
SourceMud-Terrain T/A KM3Discoverer AT3 XLT
Tyre Reviews owners – 83
America's Tire owners – 94

Scores at a glance

CategoryBFGoodrich Mud-Terrain T/A KM3Cooper Discoverer AT3 XLT
Relative Score 86 93
Dry 84 97
Wet 94 94
Snow 90 89
Comfort 82 93
Noise – 93
Treadwear 80 93
Handling – 94

Higher is better. The Relative Score follows your weights below; category scores do not change.

Personalize

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.

Neutral
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Important
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Neutral
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Neutral
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Neutral
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Important
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Neutral
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Recomputed
Headline score

Tire A

Tire B

Only categories both tires have data for count toward the headline score.

Community buzz

What real owners are saying

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

Tire A

BFGoodrich Mud-Terrain T/A KM3

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

Tire B

Cooper Discoverer AT3 XLT

Positive

Community members express strong satisfaction with the Cooper Discoverer AT3 XLT, highlighting its smooth ride quality, impressive comfort, and quietness compared to competing all-terrain tires like BFG KO2 and Toyo Open Country A/T II. Users also appreciate the solid value when purchased through online retailers during holiday sales, though questions occasionally arise regarding specific winter rating designations.

r/f150 ·51 upvotes ·2021-12-30

“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
r/NissanTitan ·29 upvotes ·2023-03-29

“Put some new tires on the XD today. Cooper Discoverer AT3 XLT in 275/70R18. I usually run BFG KO2s on my trucks but wanted to try something different this time.”
r/ram_trucks ·27 upvotes ·2024-07-11

“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.”
r/ram_trucks ·22 upvotes ·2021-11-19

“New Cooper Discoverer AT3 XLT 275/75R20 these ride way better than my old Open Country A/T II”
Top themes
#ride comfort and smoothness#low road noise#comparison to competing tires#value and pricing#winter and snow rating

Based on 7 community posts

Specifications

Specs side by side

Attribute A · BFGoodrich Mud-Terrain T/A KM3 B · Cooper Discoverer AT3 XLT
CategoryAll Terrain and Off Road All Season tirePremium Touring All Season tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available273
Rim diameters16″ – 20″16″ – 20″
Tread depth18/32″16 - 18/32″
Treadwear warranty—60,000 mi
SidewallRaised Black LetteringBlack Side Wall - Raised White Lettering
Max pressure45 - 80 psi35 - 80 psi
Final verdict

Which one should you actually buy?

BFGoodrich

Cooper

Winner: Cooper Discoverer AT3 XLT — better dry, treadwear and comfort. It leads or ties in every category we score.

Pick tire B You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 97 vs 84 on dry.

Pick tire B You want the longest tread life

Cooper Discoverer AT3 XLT scores 93 vs 80 on treadwear.

Pick tire B You want the most comfortable ride

Cooper Discoverer AT3 XLT scores 93 vs 82 on comfort.

Tire A · BFGoodrich Mud-Terrain T/A KM3
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Tire B · Cooper Discoverer AT3 XLT
Check price on Amazon

How do we compare tires?

Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.

Community buzz from Reddit and forums is shown for context only — it never changes the score.