Royal Black RT609
EU tyre label for every size: 4 sizes of this summer tyre compared with the rest of the market
The Royal Black RT609 is a summer tyre for trucks and buses. Its supplier has registered it in the EU product database (EPREL) in 4 sizes (4 registrations including load and speed variants), for 18″ to 22.5″ rims.
Wet grip is rated B–C depending on size, fuel efficiency C and external rolling noise 72–73 dB.
The label depends on the size. Sorted by wet grip, then fuel efficiency, then noise, the best-labelled size on sale is 10.00R20-18PR (Wet grip B · Fuel efficiency C · 72 dB), the weakest 315/80 R22.5-20PR (Wet grip C · Fuel efficiency C · 73 dB).
On the EU market since January 2023; the earliest production week registered is 01/2023.
How it compares in its sizes
We compared each size with all other summer tyres of the same size and class in EPREL (4 sizes had at least four rivals). A size scores when its label is at least as good as 75% of them.
Strongest point: fuel efficiency.
All 4 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 | ||||||
| 10.00R20-18PRC3 | 149/146K | B93% | C100% | 72 dBB77% | — | 01/2024 |
| 11R22.5-18PRC3 | 149/146M | B95% | C97% | 73 dBB55% | — | 01/2025 |
| 12R22.5-18PRC3 | 152/149K | B93% | C94% | 73 dBB59% | — | 01/2023 |
| 22.5″ rims | ||||||
| 315/80R22.5-20PRC3 | 156/150M | C57% | C95% | 73 dBB59% | — | 01/2024 |
Questions
Is the Royal Black RT609 a quiet tyre?
Its declared rolling noise ranges from 72 dB to 73 dB (median 73 dB). In 25% of the sizes we could compare, it is at least as quiet as three quarters of same-size rivals.
How good is the Royal Black RT609 in the wet?
Its wet grip class is B–C. In 75% of compared sizes that is at least as good as three quarters of same-size rivals.
Is the Royal Black RT609 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 Royal Black RT609 launched?
It has been on the EU market since January 2023. The earliest production week in its registrations is 01/2023; the DOT code on the sidewall shows the week and year of your tyre.
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Source: EPREL, the European Commission’s product registry for energy labelling — 4 registrations, data as of 23 October 2026. Suppliers have updated 0 of these registrations since first publication. Label values are the supplier’s declaration.