RoadX Rxquest SU01
EU tyre label for every size: 45 sizes of this summer tyre compared with the rest of the market
The RoadX Rxquest SU01 is a summer tyre for passenger cars. Its supplier has registered it in the EU product database (EPREL) in 45 sizes (46 registrations including load and speed variants), for 17″ to 22″ rims.
Wet grip is rated B in every size, fuel efficiency B–D and external rolling noise 71–73 dB.
The label depends on the size. Sorted by wet grip, then fuel efficiency, then noise, the best-labelled size on sale is 255/50 R20 (Wet grip B · Fuel efficiency B · 71 dB), the weakest 295/35 R20 (Wet grip B · Fuel efficiency D · 73 dB).
On the EU market since December 2019; the earliest production week registered is 18/2019.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (45 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
What the label means on the road (235/60R18)
Example: the 235/60R18 size, compared with the 725 other summer tyres registered in this size.
Wet braking from 80 km/h
≈37 m with class B, against ≈41 m for the most common class in this size (C).
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 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 |
|---|---|---|---|---|---|---|
| 17″ rims | ||||||
| 235/55R17 | 103W XL | B75% | D21% | 72 dBB34% | — | 18/2019 |
| 18″ rims | ||||||
| 215/50R18 | 92W | B61% | D25% | 71 dBB60% | — | 10/2021 |
| 225/50R18 | 99Y XL | B64% | C64% | 72 dBB25% | — | 10/2021 |
| 225/55R18 | 102V XL | B79% | C69% | 72 dBB16% | — | 18/2019 |
| 225/55R18 | 102W XL | B79% | D16% | 72 dBB16% | — | 18/2019 |
| 225/60R18 | 100V | B84% | D19% | 71 dBB68% | — | 18/2019 |
| 235/50R18 | 97V | B72% | D18% | 71 dBB68% | — | 18/2019 |
| 235/55R18 | 104W XL | B80% | D18% | 72 dBB29% | — | 18/2019 |
| 235/60R18 | 107W XL | B83% | C70% | 72 dBB40% | — | 18/2019 |
| 245/60R18 | 105V | B96% | D25% | 71 dBB82% | — | 18/2019 |
| 255/55R18 | 109Y XL | B81% | C78% | 72 dBB67% | — | 18/2019 |
| 255/60R18 | 112V XL | B87% | C78% | 72 dBB68% | — | 18/2019 |
| 265/60R18 | 110V | B91% | C81% | 71 dBB93% | — | 18/2019 |
| 275/40R18 | 103W XL | B56% | D31% | 71 dBB77% | — | 18/2019 |
| 19″ rims | ||||||
| 225/45R19 | 96W XL | B64% | C70% | 72 dBB41% | — | 18/2019 |
| 225/55R19 | 99W | B78% | C73% | 71 dBB65% | — | 18/2019 |
| 235/55R19 | 101W | B73% | D12% | 71 dBB62% | — | 18/2019 |
| 245/50R19 | 105W XL | B65% | C51% | 71 dBB55% | — | 10/2021 |
| 245/55R19 | 103V | B89% | D19% | 71 dBB75% | — | 18/2019 |
| 255/55R19 | 111Y XL | B77% | C67% | 72 dBB70% | — | 18/2019 |
| 265/50R19 | 110Y XL | B67% | C77% | 71 dBB91% | — | 18/2019 |
| 20″ rims | ||||||
| 235/50R20 | 104Y XL | B67% | C25% | 71 dBB47% | — | 10/2021 |
| 255/40R20 | 101Y XL | B38% | D7% | 72 dBB52% | — | 18/2019 |
| 255/45R20 | 105Y XL | B53% | C40% | 71 dBB66% | — | 18/2019 |
| 255/50R20 | 109Y XL | B70% | B77% | 71 dBB82% | — | 18/2019 |
| 255/55R20 | 110Y XL | B77% | C59% | 72 dBB67% | — | 18/2019 |
| 265/50R20 | 111Y XL | B87% | C80% | 71 dBB89% | — | 18/2019 |
| 275/35R20 | 102W XL | B53% | D16% | 71 dBB85% | — | 18/2019 |
| 275/55R20 | 117W XL | B97% | C85% | 71 dBB93% | — | 18/2019 |
| 275/60R20 | 119V XL | B96% | C81% | 71 dBB85% | — | 18/2019 |
| 285/40R20 | 104Y | B42% | D15% | 73 dBB39% | — | 18/2019 |
| 285/50R20 | 116W XL | B92% | C83% | 73 dBB74% | — | 18/2019 |
| 295/35R20 | 105Y XL | B65% | D41% | 73 dBB65% | — | 18/2019 |
| 21″ rims | ||||||
| 245/45R21 | 104Y XL | B84% | C34% | 71 dBB79% | — | 10/2021 |
| 255/40R21 | 102Y XL | B37% | C39% | 71 dBB60% | — | 10/2021 |
| 265/40R21 | 105Y XL | B57% | C53% | 71 dBB74% | — | 10/2021 |
| 265/45R21 | 108Y XL | B60% | C38% | 71 dBB79% | — | 10/2021 |
| 275/40R21 | 107Y XL | B52% | C53% | 73 dBB43% | — | 10/2021 |
| 275/45R21 | 110Y XL | B51% | C50% | 71 dBB78% | — | 18/2019 |
| 285/40R21 | 109Y XL | B50% | C51% | 73 dBB63% | — | 10/2021 |
| 315/35R21 | 111Y XL | B62% | C53% | 73 dBB69% | — | 10/2021 |
| 22″ rims | ||||||
| 265/35R22 | 102Y XL | B72% | C88% | 71 dBB89% | — | 10/2021 |
| 285/35R22 | 106Y XL | B67% | C81% | 73 dBB72% | — | 10/2021 |
| 285/45R22 | 114W XL | B85% | C75% | 73 dBB62% | — | 18/2019 |
| 305/40R22 | 114W XL | B100% | C84% | 73 dBB85% | — | 18/2019 |
| 305/45R22 | 118W XL | B100% | C81% | 73 dBB94% | — | 18/2019 |
Best-labelled summer tyres in 235/60R18
Other tyres on sale in the same size, sorted by wet grip, then noise, then fuel efficiency.
All tyres in 235/60 R18, ranked by label →
- Bridgestone Alenza 001A A 67 dB
- Nokian Tyres Powerproof EA A 67 dB
- Dunlop Blue Response TGA C 67 dB
- Yokohama ADVAN dB V552A C 67 dB
- Dunlop SP Sport Maxx 050A C 67 dB
- GitiControl P10A B 68 dB
Questions
Is the RoadX Rxquest SU01 a quiet tyre?
Its declared rolling noise ranges from 71 dB to 73 dB (median 71 dB). In 33% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the RoadX Rxquest SU01 in the wet?
Its wet grip class is B. In 47% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the RoadX Rxquest SU01 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 RoadX Rxquest SU01 launched?
It has been on the EU market since December 2019. The earliest production week in its registrations is 18/2019; the DOT code on the sidewall shows the week and year of your tyre.
More from RoadX
Source: EPREL, the European Commission’s product registry for energy labelling — 46 registrations, data as of 23 October 2026. Suppliers have updated 8 of these registrations since first publication. Label values are the supplier’s declaration.