Cooper Discoverer AT3 Sport 2
EU tyre label for every size: 24 sizes of this all-terrain tyre with 3PMSF compared with the rest of the market
The Cooper Discoverer AT3 Sport 2 is a all-terrain tyre with 3PMSF for passenger cars, vans and light trucks. Its supplier has registered it in the EU product database (EPREL) in 24 sizes (24 registrations including load and speed variants), for 15″ to 20″ rims.
Wet grip is rated B–C depending on size, fuel efficiency C–D and external rolling noise 71–73 dB. 23 of 24 registrations carry the three-peak mountain snowflake (3PMSF) for severe snow.
The label depends on the size. Sorted by wet grip, then fuel efficiency, then noise, the best-labelled size on sale (passenger cars) is 235/70 R17 (Wet grip B · Fuel efficiency C · 72 dB), the weakest 265/65 R18 (Wet grip C · Fuel efficiency D · 73 dB).
On the EU market since September 2025; the earliest production week registered is 37/2025.
How it compares in its sizes
We compared each size with all other winter and 3PMSF tyres of the same size and class in EPREL (24 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
Strongest point: wet grip. Weakest point: rolling noise, where most same-size rivals do as well or better.
What the label means on the road (235/65R17)
Example: the 235/65R17 size, compared with the 600 other winter and 3PMSF tyres registered in this size.
Wet braking from 80 km/h
≈41 m with wet grip class C, the most common class in this size.
Fuel efficiency
Class C, the most common class in this size: no difference to the typical tyre.
Rolling noise
72 dB against a median of 72 dB in this size.
Estimates from the class ranges in Regulation (EU) 2020/740. A label class is a range, so a real tyre can sit anywhere inside it. Every 3 dB doubles the sound energy.
All 24 sizes
The small figure under each class is the share of same-size, same-season tyres this size matches or beats (“–” when fewer than five tyres share the size).
| Size | Load / speed | Wet | Fuel | Noise | Snow / ice | Production from |
|---|---|---|---|---|---|---|
| 15″ rims | ||||||
| 195/80R15 | 100T XL | C97% | D97% | 72 dBB68% | 3PMSF | 18/2026 |
| 205/70R15 | 100T XL | C89% | D66% | 71 dBB73% | 3PMSF | 19/2026 |
| 215/80R15 | 106T XL | C93% | D87% | 72 dBB53% | 3PMSF | 18/2026 |
| 225/70R15 | 100T | C100% | D80% | 72 dBB73% | 3PMSF | 11/2026 |
| 235/75R15 | 109T XL | C91% | D64% | 72 dBB77% | 3PMSF | 10/2026 |
| 255/70R15 | 108T | C97% | D70% | 73 dBB77% | 3PMSF | 52/2025 |
| 265/70R15 | 112T | C100% | D77% | 73 dBB67% | 3PMSF | 09/2026 |
| 16″ rims | ||||||
| 205R16CC2 | 110/108S | C43% | D86% | 72 dBB97% | 3PMSF | 10/2026 |
| 215/70R16 | 100T | C79% | D56% | 72 dBB62% | 3PMSF | 49/2025 |
| 225/70R16 | 103T | C89% | D57% | 72 dBB59% | 3PMSF | 50/2025 |
| 225/75R16 | 104T | C93% | D90% | 72 dBB85% | 3PMSF | 08/2026 |
| 255/70R16 | 111T | C92% | D59% | 73 dBB73% | 3PMSF | 47/2025 |
| 265/70R16 | 112T | C90% | D45% | 73 dBB58% | 3PMSF | 34/2026 |
| 17″ rims | ||||||
| 235/65R17 | 108T XL | C80% | C93% | 72 dBB69% | 3PMSF | 51/2025 |
| 235/70R17 | 111T XL | B100% | C100% | 72 dBB73% | 3PMSF | 20/2026 |
| 245/65R17 | 111T XL | C80% | C94% | 72 dBB75% | 3PMSF | 26/2026 |
| 245/70R17 | 110T | C90% | D60% | 72 dBB82% | 3PMSF | 47/2025 |
| 255/65R17 | 110T | C80% | C85% | 73 dBB57% | 3PMSF | 51/2025 |
| 265/65R17 | 112T | C85% | D45% | 73 dBB60% | 3PMSF | 48/2025 |
| 265/70R17 | 115T | C93% | D59% | 73 dBB64% | 3PMSF | 51/2025 |
| 18″ rims | ||||||
| 265/60R18 | 110T | C80% | C89% | 73 dBB61% | 3PMSF | 37/2025 |
| 265/65R18 | 114T | C83% | D55% | 73 dBB59% | 3PMSF | 26/2026 |
| 19″ rims | ||||||
| 255/55R19 | 111H XL | C81% | C90% | 73 dBB56% | 3PMSF | 47/2025 |
| 20″ rims | ||||||
| 275/60R20 | 116T XL | C89% | C88% | 73 dBB64% | — | 14/2026 |
Best-labelled winter and 3PMSF tyres in 235/65R17
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 235/65 R17, ranked by label →
- Bridgestone Blizzak LM005A B 72 dB
- Linglong Sport Master WinterA C 72 dB
- Crosswind Grip Peak WinterA C 72 dB
- Radar Dimax WinterA C 72 dB
- Victory Road ASA D 72 dB
- Michelin Pilot Alpin 5 SUVB C 68 dB
Questions
Is the Cooper Discoverer AT3 Sport 2 a quiet tyre?
Its declared rolling noise ranges from 71 dB to 73 dB (median 72 dB). In 21% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Cooper Discoverer AT3 Sport 2 in the wet?
Its wet grip class is B–C. In 96% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Cooper Discoverer AT3 Sport 2 suitable for snow?
23 of 24 registrations carry the 3PMSF symbol, which means the tyre passed the EU severe-snow test. Check the exact size in the table.
When was the Cooper Discoverer AT3 Sport 2 launched?
It has been on the EU market since September 2025. The earliest production week in its registrations is 37/2025; the DOT code on the sidewall shows the week and year of your tyre.
More from Cooper
Source: EPREL, the European Commission’s product registry for energy labelling — 24 registrations, data as of 25 October 2026. Suppliers have updated 0 of these registrations since first publication. Label values are the supplier’s declaration.