Koryo K66
EU tyre label for every size: 10 sizes of this summer tyre compared with the rest of the market
The Koryo K66 is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 10 sizes (10 registrations including load and speed variants), for 17″ to 24″ rims.
Wet grip is rated C in every size, fuel efficiency D and external rolling noise 71–75 dB.
On the EU market since June 2016; the earliest production week registered is 14/2016.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (10 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
Weakest point: wet grip, where most same-size rivals do as well or better.
What the label means on the road (215/45ZR17)
Example: the 215/45ZR17 size, compared with the 469 other summer tyres registered in this size.
Wet braking from 80 km/h
≈41 m with class C, against ≈37 m for the most common class in this size (B).
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
71 dB against a median of 71 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 10 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 |
|---|---|---|---|---|---|---|
| 17″ rims | ||||||
| 215/45ZR17 | 87W | C47% | D34% | 71 dBB75% | — | 28/2021 |
| 20″ rims | ||||||
| 245/45ZR20 | 103W XL | C29% | D16% | 72 dBB46% | — | 14/2016 |
| 275/55R20 | 117V XL | C68% | D35% | 73 dBB49% | — | 14/2016 |
| 22″ rims | ||||||
| 225/30ZR22 | 87W XL | C41% | D65% | 72 dBB53% | — | 14/2016 |
| 235/30ZR22 | 90W XL | C43% | D57% | 72 dBB50% | — | 14/2016 |
| 265/30ZR22 | 97W XL | C34% | D36% | 73 dBB36% | — | 14/2016 |
| 265/40ZR22 | 106W XL | C22% | D14% | 73 dBB40% | — | 14/2016 |
| 295/25ZR22 | 97W XL | C21% | D29% | 75 dBB29% | — | 14/2016 |
| 24″ rims | ||||||
| 245/30ZR24 | 94W XL | C33% | D83% | 72 dBB100% | — | 14/2016 |
| 275/25ZR24 | 96W XL | C65% | D57% | 73 dBB43% | — | 14/2016 |
Best-labelled summer tyres in 215/45ZR17
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 215/45 ZR17, ranked by label →
- Envoy Motiva UHPA C 67 dB
- Petlas Prestige SportA C 68 dB
- Starmaxx Dynamix SportA C 68 dB
- Momo Toprun M300 AS SportA D 68 dB
- Rauffan Avantar R7A C 69 dB
- Sicuro Velos Sport S5A C 69 dB
Questions
Is the Koryo K66 a quiet tyre?
Its declared rolling noise ranges from 71 dB to 75 dB (median 72.5 dB). In 10% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Koryo K66 in the wet?
Its wet grip class is C. In 0% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Koryo K66 suitable for snow?
No size carries the 3PMSF symbol, so it is not certified for severe snow. In countries with winter tyre rules it does not count as a winter tyre.
When was the Koryo K66 launched?
It has been on the EU market since June 2016. The earliest production week in its registrations is 14/2016; the DOT code on the sidewall shows the week and year of your tyre.
More from Koryo
Source: EPREL, the European Commission’s product registry for energy labelling — 10 registrations, data as of 23 October 2026. Suppliers have updated 10 of these registrations since first publication. Label values are the supplier’s declaration.