Roadiamond Super HU1
EU tyre label for every size: 37 sizes of this summer tyre compared with the rest of the market
The Roadiamond Super HU1 is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 37 sizes (46 registrations including load and speed variants), for 17″ to 22″ rims.
Wet grip is rated B in every size, fuel efficiency C and external rolling noise 71–73 dB.
On the EU market since February 2026; the earliest production week registered is 04/2026.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (37 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 (235/55R18)
Example: the 235/55R18 size, compared with the 626 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
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 37 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 | ||||||
| 205/45R17 | 88W XL · 88W XL | B68% | C85% | 72 dBB41% | — | 04/2026 |
| 205/50R17 | 93W XL | B72% | C77% | 72 dBB37% | — | 04/2026 |
| 215/45R17 | 91W XL | B71% | C87% | 72 dBB41% | — | 05/2026 |
| 215/50R17 | 95W XL | B75% | C79% | 72 dBB40% | — | 04/2026 |
| 215/55R17 | 94W | B72% | C71% | 71 dBB59% | — | 05/2026 |
| 225/45R17 | 94W XL | B63% | C84% | 72 dBB28% | — | 05/2026 |
| 225/50R17 | 98W XL | B70% | C79% | 72 dBB31% | — | 04/2026 |
| 225/55R17 | 97W | B72% | C75% | 71 dBB60% | — | 04/2026 |
| 235/45R17 | 97W XL | B69% | C88% | 72 dBB44% | — | 04/2026 |
| 18″ rims | ||||||
| 215/55R18 | 99W XL | B83% | C71% | 72 dBB35% | — | 05/2026 |
| 225/40R18 | 92W XL | B63% | C84% | 72 dBB47% | — | 05/2026 |
| 225/45R18 | 95W XL | B65% | C68% | 72 dBB37% | — | 04/2026 |
| 225/50R18 | 99W XL | B64% | C64% | 72 dBB25% | — | 04/2026 |
| 225/55R18 | 102W XL | B79% | C69% | 72 dBB16% | — | 04/2026 |
| 235/45R18 | 98W XL | B60% | C65% | 72 dBB41% | — | 05/2026 |
| 235/50R18 | 101W XL · 101W XL | B72% | C73% | 72 dBB29% | — | 04/2026 |
| 235/55R18 | 104W XL | B80% | C69% | 72 dBB29% | — | 04/2026 |
| 245/40R18 | 97W XL | B67% | C83% | 72 dBB49% | — | 04/2026 |
| 245/45R18 | 100W XL · 100W XL | B66% | C70% | 72 dBB40% | — | 04/2026 |
| 19″ rims | ||||||
| 225/45R19 | 96W XL | B64% | C70% | 72 dBB41% | — | 11/2026 |
| 235/40R19 | 96W XL · 96W XL | B57% | C64% | 72 dBB46% | — | 04/2026 |
| 235/45R19 | 99W XL | B63% | C57% | 72 dBB31% | — | 04/2026 |
| 235/50R19 | 103W XL · 103W XL | B70% | C52% | 72 dBB19% | — | 04/2026 |
| 235/55R19 | 105W XL | B73% | C57% | 72 dBB34% | — | 04/2026 |
| 245/45R19 | 102W XL · 102W XL | B64% | C55% | 72 dBB36% | — | 04/2026 |
| 255/45R19 | 104W XL · 104W XL | B60% | C45% | 73 dBB20% | — | 04/2026 |
| 255/50R19 | 107W XL | B72% | C68% | 73 dBB39% | — | 16/2026 |
| 20″ rims | ||||||
| 245/40R20 | 99W XL | B59% | C56% | 72 dBB48% | — | 16/2026 |
| 245/45R20 | 103W XL · 103W XL | B65% | C53% | 72 dBB36% | — | 04/2026 |
| 255/45R20 | 105W XL · 105W XL | B53% | C40% | 73 dBB22% | — | 04/2026 |
| 265/45R20 | 108W XL | B52% | C55% | 73 dBB34% | — | 04/2026 |
| 275/45R20 | 110W XL | B72% | C71% | 73 dBB46% | — | 04/2026 |
| 275/50R20 | 113W XL | B63% | C55% | 73 dBB30% | — | 11/2026 |
| 21″ rims | ||||||
| 255/45R21 | 105W XL | B68% | C32% | 73 dBB28% | — | 04/2026 |
| 265/40R21 | 105W XL | B57% | C53% | 73 dBB24% | — | 19/2026 |
| 275/40R21 | 107W XL | B52% | C53% | 73 dBB43% | — | 04/2026 |
| 22″ rims | ||||||
| 265/40R22 | 106W XL | B68% | C55% | 73 dBB43% | — | 08/2026 |
Best-labelled summer tyres in 235/55R18
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 235/55 R18, ranked by label →
- Nokian Tyres Powerproof EA A 67 dB
- Yokohama Advan Fleva V701A C 67 dB
- Falken Azenis FK520A A 68 dB
- Goodyear Eagle F1 Asymmetric 6A A 68 dB
- Hankook Ventus Evo SUVA A 68 dB
- Pirelli ScorpionA A 68 dB
Questions
Is the Roadiamond Super HU1 a quiet tyre?
Its declared rolling noise ranges from 71 dB to 73 dB (median 72 dB). In 0% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Roadiamond Super HU1 in the wet?
Its wet grip class is B. In 8% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Roadiamond Super HU1 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 Roadiamond Super HU1 launched?
It has been on the EU market since February 2026. The earliest production week in its registrations is 04/2026; the DOT code on the sidewall shows the week and year of your tyre.
More from Roadiamond
Source: EPREL, the European Commission’s product registry for energy labelling — 46 registrations, data as of 23 October 2026. Suppliers have updated 0 of these registrations since first publication. Label values are the supplier’s declaration.