Tyre comparison
BFGoodrich All-Terrain T/A KO3 vs Cooper Discoverer AT3 4S
The All-Terrain T/A KO3 scores higher for every kind of driver we tested. Choose the All-Terrain T/A KO3 for tread life and quiet & comfort. The Discoverer AT3 4S usually costs less.
BFGoodrich
All-Terrain T/A KO3
The A/T benchmark: tough sidewalls, long life.
All-terrain (A/T) · Premium
Fit score by driver
The same 0–100 score the calculator ranks tyres by, weighted for each kind of driver. How we score
| Driver | All-Terrain T/A KO3 | Discoverer AT3 4S |
|---|---|---|
| Gravel and towing | 67 (higher) | 56 |
| Mostly bitumen | 67 (higher) | 55 |
| Longest life | 70 (higher) | 58 |
Trait by trait
Out of 10, against other all-terrain tyres.
All-Terrain T/A KO3
Where the scores come from
Independent tests
- Tested by
- ADAC
- Year
- 2025
ADAC all-terrain 2025: 'Recommended'; subjective noise 9.5 pts; tough, long life.
Data last reviewed: October 2026
Discoverer AT3 4S
Where the scores come from
Estimated: no independent test of this tyre found
No test found in snippets; maker warranty/positioning.
Data last reviewed: October 2026
Questions
Which is better, the All-Terrain T/A KO3 or the Discoverer AT3 4S?
The All-Terrain T/A KO3 scores higher for every kind of driver we tested. Choose the All-Terrain T/A KO3 for tread life and quiet & comfort. The Discoverer AT3 4S usually costs less.
Where do these ratings come from?
From independent tyre tests where they exist (ADAC, Auto Bild, Tyre Reviews, evo, Tire Rack and others), rated 1 to 10 against other tyres in the same category, last reviewed October 2026. Neither tyre maker nor any retailer can change them.