Otani KC1000-RFT
EU tyre label for every size: 45 sizes of this summer tyre compared with the rest of the market
The Otani KC1000-RFT is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 45 sizes (45 registrations including load and speed variants), for 18″ to 22″ rims.
Wet grip is rated B in every size, fuel efficiency C–D and external rolling noise 70–73 dB.
The label depends on the size. Sorted by wet grip, then fuel efficiency, then noise, the best-labelled size on sale is 255/45 RF19 (Wet grip B · Fuel efficiency C · 70 dB), the weakest 315/35 RF21 (Wet grip B · Fuel efficiency D · 73 dB).
On the EU market since July 2026; the earliest production week registered is 20/2026.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (20 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
Strongest point: rolling noise.
What the label means on the road (255/50RF19)
Example: the 255/50RF19 size, compared with the 24 other summer tyres registered in this size.
Wet braking from 80 km/h
≈37 m with wet grip class B, the most common class in this size.
Fuel efficiency
Class C vs the typical D: ≈0.18 L/100 km less, about 28 litres less over 15,000 km for a 1,500 kg car.
Rolling noise
70 dB against a median of 72 dB in this size (2 dB quieter).
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 45 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 |
|---|---|---|---|---|---|---|
| 18″ rims | ||||||
| 225/40RF18 | 92W XL | B93% | D87% | 70 dBB100% | — | 20/2026 |
| 225/45RF18 | 95W XL | B91% | D82% | 70 dBB100% | — | 20/2026 |
| 225/55RF18 | 102W XL | B– | D– | 70 dBB– | — | 20/2026 |
| 235/55RF18 | 104W XL | B100% | D100% | 70 dBB100% | — | 20/2026 |
| 245/40RF18 | 97W XL | B92% | D100% | 70 dBB100% | — | 20/2026 |
| 245/45RF18 | 100W XL | B93% | D80% | 70 dBB100% | — | 20/2026 |
| 255/40RF18 | 99W XL | B88% | D63% | 70 dBA100% | — | 20/2026 |
| 275/40RF18 | 103W XL | B71% | D57% | 70 dBA100% | — | 20/2026 |
| 19″ rims | ||||||
| 225/40RF19 | 93W XL | B89% | D67% | 70 dBB89% | — | 20/2026 |
| 235/50RF19 | 103V XL | B100% | D100% | 70 dBB100% | — | 20/2026 |
| 235/55RF19 | 105W XL | B100% | D69% | 70 dBB92% | — | 20/2026 |
| 245/40RF19 | 98W XL | B82% | D64% | 70 dBB100% | — | 20/2026 |
| 245/45RF19 | 102W XL | B89% | D78% | 70 dBB100% | — | 20/2026 |
| 245/50RF19 | 105W XL | B86% | D86% | 70 dBB93% | — | 20/2026 |
| 255/35RF19 | 96W XL | B80% | D80% | 70 dBA100% | — | 20/2026 |
| 255/45RF19 | 104W XL | B– | C– | 70 dBA– | — | 20/2026 |
| 255/50RF19 | 107V XL | B100% | C100% | 70 dBA100% | — | 20/2026 |
| 275/35RF19 | 100W XL | B75% | D63% | 70 dBA100% | — | 20/2026 |
| 285/40RF19 | 107W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 20″ rims | ||||||
| 245/35RF20 | 95W XL | B– | D– | 70 dBB– | — | 20/2026 |
| 245/40RF20 | 99W XL | B– | D– | 70 dBB– | — | 20/2026 |
| 245/45RF20 | 103W XL | B86% | D100% | 70 dBB86% | — | 20/2026 |
| 255/40RF20 | 101W XL | B– | D– | 70 dBA– | — | 20/2026 |
| 255/45RF20 | 105W XL | B100% | D88% | 70 dBA100% | — | 20/2026 |
| 265/40RF20 | 104W XL | B– | D– | 70 dBA– | — | 20/2026 |
| 275/35RF20 | 102W XL | B100% | D50% | 70 dBA100% | — | 20/2026 |
| 275/40RF20 | 106W XL | B60% | D40% | 70 dBA90% | — | 20/2026 |
| 275/45RF20 | 110W XL | B– | C– | 70 dBA– | — | 20/2026 |
| 285/30RF20 | 99W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 285/35RF20 | 104W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 285/40RF20 | 108W XL | B– | C– | 73 dBB– | — | 20/2026 |
| 295/35RF20 | 105W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 305/40RF20 | 112W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 21″ rims | ||||||
| 255/40RF21 | 102W XL | B– | D– | 70 dBA– | — | 20/2026 |
| 265/40RF21 | 105W XL | B– | D– | 70 dBA– | — | 20/2026 |
| 275/40RF21 | 107W XL | B– | C– | 70 dBA– | — | 20/2026 |
| 275/45RF21 | 110W XL | B– | D– | 70 dBA– | — | 20/2026 |
| 285/35RF21 | 105W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 285/45RF21 | 113W XL | B– | C– | 73 dBB– | — | 20/2026 |
| 315/35RF21 | 111W XL | B– | D– | 73 dBB– | — | 20/2026 |
| 315/40RF21 | 115W XL | B– | C– | 73 dBB– | — | 20/2026 |
| 22″ rims | ||||||
| 275/35RF22 | 104W XL | B– | C– | 70 dBA– | — | 20/2026 |
| 275/40RF22 | 107W XL | B– | C– | 70 dBA– | — | 20/2026 |
| 315/30RF22 | 107W XL | B– | C– | 73 dBB– | — | 20/2026 |
| 315/35RF22 | 111W XL | B– | C– | 73 dBB– | — | 20/2026 |
Best-labelled summer tyres in 255/50RF19
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
- Starmaxx Incurro H/T ST450B C 71 dB
- Petlas Explero H/T PT431B C 71 dB
- Landsail RapidDragon SUVB C 72 dB
- Grenlander L-ZEAL56B D 72 dB
- iLink L-ZEAL56B D 72 dB
- Arivo Ultra ARZ5B D 72 dB
Questions
Is the Otani KC1000-RFT a quiet tyre?
Its declared rolling noise ranges from 70 dB to 73 dB (median 70 dB). In 100% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Otani KC1000-RFT in the wet?
Its wet grip class is B. In 90% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Otani KC1000-RFT 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 Otani KC1000-RFT launched?
It has been on the EU market since July 2026. The earliest production week in its registrations is 20/2026; the DOT code on the sidewall shows the week and year of your tyre.
More from Otani
Source: EPREL, the European Commission’s product registry for energy labelling — 45 registrations, data as of 25 October 2026. Suppliers have updated 0 of these registrations since first publication. Label values are the supplier’s declaration.