Kingboss G521
EU tyre label for every size: 61 sizes of this summer tyre compared with the rest of the market
The Kingboss G521 is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 61 sizes (61 registrations including load and speed variants), for 13″ to 16″ rims.
Wet grip is rated C in every size, fuel efficiency D and external rolling noise 70–72 dB.
On the EU market since May 2021; the earliest production week registered is 17/2021.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (61 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 (195/65R15)
Example: the 195/65R15 size, compared with the 947 other summer 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
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 61 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 |
|---|---|---|---|---|---|---|
| 13″ rims | ||||||
| 145/70R13 | 71T | C84% | D82% | 70 dBB60% | — | 17/2021 |
| 145/80R13 | 75T | C90% | D78% | 70 dBB66% | — | 17/2021 |
| 155/65R13 | 73T | C72% | D83% | 70 dBB73% | — | 18/2024 |
| 155/70R13 | 75T | C71% | D77% | 70 dBB69% | — | 17/2021 |
| 155/80R13 | 79T | C70% | D82% | 70 dBB69% | — | 17/2021 |
| 165/65R13 | 77T | C74% | D75% | 70 dBB71% | — | 17/2021 |
| 165/70R13 | 79T | C74% | D72% | 70 dBB73% | — | 17/2021 |
| 165/80R13 | 83T | C74% | D71% | 70 dBB67% | — | 18/2024 |
| 175/60R13 | 77T | C75% | D77% | 70 dBB80% | — | 17/2021 |
| 175/70R13 | 82T | C72% | D63% | 70 dBB73% | — | 17/2021 |
| 14″ rims | ||||||
| 155/60R14 | 72H | C100% | D100% | 70 dBB0% | — | 17/2021 |
| 155/65R14 | 75T | C63% | D74% | 70 dBB68% | — | 17/2021 |
| 165/55R14 | 72H | C67% | D65% | 70 dBB73% | — | 18/2024 |
| 165/60R14 | 75H | C67% | D76% | 70 dBB71% | — | 17/2021 |
| 165/65R14 | 79T | C63% | D68% | 70 dBB69% | — | 17/2021 |
| 165/70R14 | 81T | C62% | D60% | 70 dBB70% | — | 17/2021 |
| 175/60R14 | 79H | C67% | D72% | 70 dBB68% | — | 17/2021 |
| 175/65R14 | 82H | C62% | D55% | 70 dBB71% | — | 17/2021 |
| 175/70R14 | 84T | C65% | D51% | 70 dBB74% | — | 17/2021 |
| 185/50R14 | 77V | C76% | D78% | 70 dBB46% | — | 18/2024 |
| 185/55R14 | 80H | C66% | D71% | 70 dBB65% | — | 17/2021 |
| 185/60R14 | 82H | C62% | D60% | 70 dBB72% | — | 17/2021 |
| 185/65R14 | 86H | C64% | D53% | 70 dBB71% | — | 17/2021 |
| 185/70R14 | 88T | C68% | D44% | 70 dBB75% | — | 17/2021 |
| 195/60R14 | 86H | C70% | D69% | 71 dBB68% | — | 17/2021 |
| 195/70R14 | 91T | C68% | D45% | 71 dBB62% | — | 17/2021 |
| 15″ rims | ||||||
| 145/65R15 | 72T | C76% | D71% | 70 dBB53% | — | 18/2024 |
| 155/60R15 | 74H | C60% | D70% | 70 dBB59% | — | 18/2024 |
| 165/50R15 | 72V | C64% | D65% | 70 dBB73% | — | 18/2024 |
| 165/55R15 | 75H | C53% | D77% | 70 dBB70% | — | 18/2024 |
| 165/60R15 | 81H XL | C59% | D55% | 71 dBB9% | — | 18/2024 |
| 165/65R15 | 81H | C58% | D51% | 70 dBB69% | — | 17/2021 |
| 175/50R15 | 75H | C69% | D66% | 70 dBB58% | — | 18/2024 |
| 175/55R15 | 77H | C60% | D70% | 70 dBB72% | — | 18/2024 |
| 175/60R15 | 81V | C60% | D57% | 70 dBB71% | — | 17/2021 |
| 175/65R15 | 84H | C56% | D44% | 70 dBB72% | — | 17/2021 |
| 185/55R15 | 82V | C53% | D55% | 70 dBB73% | — | 17/2021 |
| 185/60R15 | 84H | C55% | D41% | 70 dBB73% | — | 17/2021 |
| 185/65R15 | 88H | C52% | D34% | 70 dBB74% | — | 17/2021 |
| 195/50R15 | 82V | C50% | D58% | 71 dBB61% | — | 17/2021 |
| 195/55R15 | 85V | C50% | D51% | 71 dBB59% | — | 17/2021 |
| 195/60R15 | 88H | C52% | D40% | 71 dBB57% | — | 17/2021 |
| 195/65R15 | 91H | C50% | D28% | 71 dBB58% | — | 17/2021 |
| 205/50R15 | 86V | C54% | D64% | 71 dBB54% | — | 18/2024 |
| 205/55R15 | 88V | C63% | D41% | 71 dBB50% | — | 18/2024 |
| 205/60R15 | 91V | C52% | D33% | 71 dBB63% | — | 17/2021 |
| 205/65R15 | 94H | C53% | D31% | 71 dBB64% | — | 17/2021 |
| 205/70R15 | 96H | C63% | D42% | 71 dBB68% | — | 18/2024 |
| 215/60R15 | 94H | C52% | D57% | 71 dBB58% | — | 17/2021 |
| 16″ rims | ||||||
| 175/50R16 | 77V | C78% | D67% | 70 dBB48% | — | 18/2024 |
| 185/50R16 | 81V | C63% | D67% | 70 dBB66% | — | 18/2024 |
| 185/55R16 | 83V | C52% | D43% | 70 dBB72% | — | 18/2024 |
| 185/60R16 | 86H | C56% | D36% | 70 dBB42% | — | 18/2024 |
| 195/55R16 | 87V | C40% | D28% | 71 dBB56% | — | 17/2021 |
| 195/60R16 | 89H | C49% | D30% | 71 dBB53% | — | 17/2021 |
| 205/55R16 | 91V | C37% | D25% | 71 dBB58% | — | 17/2021 |
| 205/60R16 | 92V | C39% | D20% | 71 dBB60% | — | 17/2021 |
| 205/65R16 | 95H | C48% | D27% | 71 dBB58% | — | 18/2024 |
| 215/55R16 | 97V XL | C38% | D23% | 72 dBB33% | — | 17/2021 |
| 215/60R16 | 95V | C42% | D20% | 71 dBB63% | — | 17/2021 |
| 215/65R16 | 98H | C52% | D27% | 71 dBB69% | — | 17/2021 |
Best-labelled summer tyres in 195/65R15
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 195/65 R15, ranked by label →
- Nokian Tyres Hakka Blue 3A B 67 dB
- Falken Ziex ZE310 EcorunA C 67 dB
- Falken Ziex ZE320A C 67 dB
- Yokohama ADVAN dB V552A C 67 dB
- Autogreen SportChaser-SC2A D 67 dB
- Bridgestone Ecopia EP150A A 68 dB
Questions
Is the Kingboss G521 a quiet tyre?
Its declared rolling noise ranges from 70 dB to 72 dB (median 70 dB). In 3% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Kingboss G521 in the wet?
Its wet grip class is C. In 12% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Kingboss G521 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 Kingboss G521 launched?
It has been on the EU market since May 2021. The earliest production week in its registrations is 17/2021; the DOT code on the sidewall shows the week and year of your tyre.
More from Kingboss
Source: EPREL, the European Commission’s product registry for energy labelling — 61 registrations, data as of 23 October 2026. Suppliers have updated 61 of these registrations since first publication. Label values are the supplier’s declaration.