Pirelli Diablo Rosso IV vs Metzeler Racetec RR K3
Ahead in each discipline
The Pirelli Diablo Rosso IV and the Metzeler Racetec RR K3 have met in one independent test so far, and the Diablo Rosso IV finished ahead. The Diablo Rosso IV was stronger in wet, the Racetec RR K3 in dry.
Every measurement, side by side
Both tires' figures from the one test that ran them together, on the same car, in the same size, on the same day. The bar grows towards the tire that did better.
| Measurement | Diablo Rosso IV | Gap | Racetec RR K3 |
|---|---|---|---|
| Dry Racetec RR K3 ahead | |||
| Dry Handling s | 82.04 | 2.3% | 80.17 |
| Wet Diablo Rosso IV ahead | |||
| Wet Handling s | 74.64 | 4.6% | 78.26 |
Braking distances and lap times are better when lower; speeds, wear and grip figures when higher. A test's figures are its own: sizes, cars, surfaces and temperatures differ from one to the next, which is why the averages here are only ever of tests the two tires shared.
Head to head in 1 test in 2025
Each row is one published test in which both tires ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | Diablo Rosso IV | Field | Racetec RR K3 |
|---|---|---|---|
| 2025 Sport and Hypersport Motorcycle Tire Test | P5 of 12 | P7 of 12 |
Diablo Rosso IV vs Racetec RR K3: your questions
Is the Pirelli Diablo Rosso IV or the Metzeler Racetec RR K3 the better tire?
The Pirelli Diablo Rosso IV and the Metzeler Racetec RR K3 have met in one independent test so far, and the Diablo Rosso IV finished ahead.
Which is better in the wet, the Diablo Rosso IV or the Racetec RR K3?
The Diablo Rosso IV led 1 of the 1 wet measurements the shared tests recorded.
Which is better in the dry?
The Racetec RR K3 led 1 of the 1 dry measurements the shared tests recorded.
What do owners say?
Owners rate the Diablo Rosso IV 88% from 8 reviews; the Racetec RR K3 has no owner reviews yet.
More comparisons with these tires
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Your review is the part of this page no test can supply: how the tire wore, how it aged, what it was like in the rain in year three. It takes about five minutes.
Where this data comes from
Finishing positions and measurements are transcribed from each published test. A test only counts here when both tires ran in it, so every figure was recorded on the same car, size and day as the one it is compared to.
About the TR Score
The Tire Reviews Score rates each tire out of 10 from every independent test result and vetted owner review we hold, so two tires can be compared even before a test has run them together.
Who does the testing
Every test published as a Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.