Nitto NT421Q
EU tyre label for every size: 31 sizes of this summer tyre compared with the rest of the market
The Nitto NT421Q is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 31 sizes (31 registrations including load and speed variants), for 16″ to 21″ rims.
Wet grip is rated B in every size, fuel efficiency C and external rolling noise 71–73 dB.
On the EU market since December 2016; the earliest production week registered is 40/2016.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (31 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.
What the label means on the road (215/60 R16)
Example: the 215/60 R16 size, compared with the 828 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, the most common class in this size: no difference to the typical tyre.
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 31 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 |
|---|---|---|---|---|---|---|
| 16″ rims | ||||||
| 215/60 R16 | 99V XL | B86% | C82% | 71 dBB63% | — | 07/2018 |
| 235/60 R16 | 100V | B95% | C89% | 71 dBB69% | — | 50/2016 |
| 17″ rims | ||||||
| 215/60 R17 | 96V | B85% | C74% | 71 dBB63% | — | 42/2017 |
| 225/55 R17 | 101V XL | B72% | C75% | 71 dBB60% | — | 09/2018 |
| 225/60 R17 | 103V XL | B86% | C84% | 71 dBB65% | — | 44/2016 |
| 225/65 R17 | 106V XL | B89% | C84% | 71 dBB68% | — | 01/2018 |
| 235/55 R17 | 99V | B75% | C76% | 71 dBB71% | — | 40/2016 |
| 235/60 R17 | 106H XL | B92% | C87% | 71 dBB74% | — | 12/2017 |
| 235/65 R17 | 108V XL | B89% | C81% | 71 dBB78% | — | 42/2017 |
| 255/60 R17 | 110V XL | B89% | C94% | 71 dBB80% | — | 33/2018 |
| 18″ rims | ||||||
| 215/50 R18 | 92V | B61% | C66% | 71 dBB60% | — | 09/2018 |
| 225/60 R18 | 104V XL | B84% | C72% | 71 dBB68% | — | 43/2016 |
| 235/50 R18 | 97V | B72% | C73% | 71 dBB68% | — | 37/2018 |
| 235/55 R18 | 104V XL | B80% | C69% | 71 dBB68% | — | 46/2017 |
| 235/60 R18 | 107W XL | B83% | C70% | 71 dBB72% | — | 02/2018 |
| 255/55 R18 | 109W XL | B81% | C78% | 71 dBB87% | — | 01/2018 |
| 265/60 R18 | 110V | B91% | C81% | 71 dBB93% | — | 14/2019 |
| 19″ rims | ||||||
| 225/55 R19 | 99V | B78% | C73% | 71 dBB65% | — | 03/2017 |
| 235/45 R19 | 95V | B63% | C57% | 71 dBB63% | — | 11/2019 |
| 235/55 R19 | 105W XL | B73% | C57% | 71 dBB62% | — | 44/2016 |
| 255/50 R19 | 107W XL | B72% | C68% | 71 dBB84% | — | 01/2018 |
| 265/50 R19 | 110W XL | B67% | C77% | 71 dBB91% | — | 51/2016 |
| 275/45 R19 | 108W XL | B66% | C74% | 71 dBB83% | — | 15/2018 |
| 20″ rims | ||||||
| 245/45 R20 | 103W XL | B65% | C53% | 71 dBB65% | — | 03/2017 |
| 255/45 R20 | 105W XL | B53% | C40% | 71 dBB66% | — | 10/2018 |
| 265/50 R20 | 111V XL | B87% | C80% | 71 dBB89% | — | 45/2017 |
| 275/40 R20 | 106W XL | B72% | C76% | 71 dBB86% | — | 42/2017 |
| 275/45 R20 | 110W XL | B72% | C71% | 71 dBB89% | — | 46/2016 |
| 315/35 R20 | 110W XL | B65% | C86% | 73 dBB64% | — | 09/2018 |
| 21″ rims | ||||||
| 275/35 R21 | 103W XL | B47% | C48% | 71 dBB84% | — | 14/2017 |
| 295/35 R21 | 107W XL | B54% | C69% | 73 dBB65% | — | 52/2016 |
Best-labelled summer tyres in 215/60 R16
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 215/60 R16, ranked by label →
- Falken Ziex ZE914A EcorunA B 67 dB
- Falken Ziex ZE320A C 67 dB
- Nokian Tyres Hakka Blue 3A C 67 dB
- Falken Ziex ZE310 EcorunA D 67 dB
- Autogreen SportChaser-SC2A D 67 dB
- Goodyear Efficientgrip Performance 2A A 68 dB
Questions
Is the Nitto NT421Q a quiet tyre?
Its declared rolling noise ranges from 71 dB to 73 dB (median 71 dB). In 36% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Nitto NT421Q in the wet?
Its wet grip class is B. In 52% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Nitto NT421Q 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 Nitto NT421Q launched?
It has been on the EU market since December 2016. The earliest production week in its registrations is 40/2016; the DOT code on the sidewall shows the week and year of your tyre.
More from Nitto
Source: EPREL, the European Commission’s product registry for energy labelling — 31 registrations, data as of 23 October 2026. Suppliers have updated 31 of these registrations since first publication. Label values are the supplier’s declaration.