Cooper Discoverer AT3 4S
EU tyre label for every size: 14 sizes of this all-season tyre compared with the rest of the market
The Cooper Discoverer AT3 4S is a all-season tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 14 sizes (17 registrations including load and speed variants), for 15″ to 22″ rims.
Wet grip is rated C–D depending on size, fuel efficiency C–D and external rolling noise 72–75 dB. Every size carries the three-peak mountain snowflake (3PMSF), the mark for tyres tested in severe snow.
The label depends on the size. Sorted by wet grip, then fuel efficiency, then noise, the best-labelled size on sale is 265/65 R18 (Wet grip C · Fuel efficiency C · 73 dB), the weakest 265/70 R16 (Wet grip D · Fuel efficiency D · 73 dB).
On the EU market since May 2022; the earliest production week registered is 21/2022.
How it compares in its sizes
We compared each size with all other all-season tyres of the same size and class in EPREL (5 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
Weakest point: rolling noise, where most same-size rivals do as well or better.
What the label means on the road (215/70R16)
Example: the 215/70R16 size, compared with the 91 other all-season 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 D vs the typical C: ≈0.18 L/100 km more, about 28 litres more over 15,000 km for a 1,500 kg car.
Rolling noise
72 dB against a median of 71 dB in this size (1 dB louder).
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 14 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 | ||||||
| 265/70R15 | 112T | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| 265/75R15 | 112T | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| 16″ rims | ||||||
| 215/70R16 | 100T | C60% | D29% | 72 dBB34% | 3PMSF | 21/2022 |
| 235/75R16 | 108T | C– | D– | 72 dBB– | 3PMSF | 21/2022 |
| 245/75R16 | 111T | C– | D– | 72 dBB– | 3PMSF | 21/2022 |
| 265/70R16 | 112T · 112T | D44% | D11% | 73 dBB33% | 3PMSF | 51/2023 |
| 17″ rims | ||||||
| 255/75R17 | 115T | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| P285/70R17 | 117T | C– | D– | 75 dBB– | 3PMSF | 21/2022 |
| 18″ rims | ||||||
| 255/70R18 | 113T | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| 265/65R18 | 114T · 114T · 114T | C75% | C75% | 73 dBB75% | 3PMSF | 12/2026 |
| 265/70R18 | 116T | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| 20″ rims | ||||||
| 255/50R20 | 109H XL | C17% | D0% | 73 dBB32% | 3PMSF | 21/2022 |
| 22″ rims | ||||||
| 275/45R22 | 112H XL | C– | D– | 73 dBB– | 3PMSF | 21/2022 |
| 285/45R22 | 114H XL | C67% | D0% | 75 dBB17% | 3PMSF | 21/2022 |
Best-labelled all-season tyres in 215/70R16
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 215/70 R16, ranked by label →
- Falken Euroall Season AS220A C 68 dB
- GT Radial ClimateActiveA B 70 dB
- Bridgestone Weather Control A005 EvoA C 71 dB
- Bridgestone Weather Control A005A C 71 dB
- Linglong Sport Master 4SB C 69 dB
- Crosswind Grip Peak 4SB C 69 dB
Questions
Is the Cooper Discoverer AT3 4S a quiet tyre?
Its declared rolling noise ranges from 72 dB to 75 dB (median 73 dB). In 20% 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 4S in the wet?
Its wet grip class is C–D. In 20% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Cooper Discoverer AT3 4S suitable for snow?
17 of 17 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 4S launched?
It has been on the EU market since May 2022. The earliest production week in its registrations is 21/2022; 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 — 17 registrations, data as of 25 October 2026. Suppliers have updated 0 of these registrations since first publication. Label values are the supplier’s declaration.