Updated October 2026

Pirelli Diablo Rosso IV review

Name: Pirelli Diablo Rosso IV
Brand: Pirelli

Relative score 60% tests + 40% owners

Owners 79 · 181 reviews analysed Road tests 74 · 1 test

How scores work

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The Pirelli Diablo Rosso IV is widely praised by motorcyclists as an exceptional hypersport street tire, offering significant improvements in dry and wet grip, quick warm-up times, and steering precision over its predecessors. While users note outstanding confidence during aggressive cornering and braking, some report higher pricing and a noticeable drop-off in grip as the tires wear down near the end of their lifespan.

Two scoring systems, side by side

Owner scores come from reviews found online; road-test scores come from instrumented tests. Where they disagree, it is usually a discipline owners rarely push to the limit.

How scores work

Relative score: 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, the missing half is estimated from it, so the score stays closer to average. It needs at least one road test or five owner reviews.
Road tests: 0–100 per score, from published tests, newer tests counting more. Each result is compared with every other tire in the same test, so a win against a strong field counts for more. The average tested tire gets 70, the best 100; with only one or two tests a tire stays nearer 70. The discipline rows show % of the best tire in that test.
Owner reviews: 0–100 from the owner reviews we found online, adjusted for how generously each site rates and scaled like the road tests: the average tested tire gets 70. With only a few reviews a tire stays near the average.

By owner reviews

79/100

From 181 owner reviews analysed, scaled like the road tests: the average tested tire gets 70.

Would buy again 100%

Dry

Overall dry

86.8

Corner stability

84.9

Dry traction

84.9

Steering response

84.9

Wet

Overall wet

79.7

Wet traction

81.3

Comfort

Overall comfort

80.8

Treadwear

Overall treadwear

66.1

Handling

Overall handling

86.9

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By road tests

74/100

Scaled across every tested tire: the average gets 70, the best 100.

Dry

67.8

Wet

80.7

What owners like and dislike

Themes extracted from 181 owner reviews found online.

Pros

Exceptional dry and wet grip with a high level of rider confidence
Fast warm-up time and predictable handling at deep lean angles
Improved steering precision and turn-in compared to previous generations like the Diablo Rosso III
Good longevity for a hypersport tire, lasting up to 4,000 to 10,000 miles depending on usage

Cons

Higher price point compared to some competitors and previous models
Noticeable reduction in grip and increased rear wheel spin as the tires wear down
Requires full operating temperature for optimal performance late in its life cycle

Worth knowing

A rider on a PCX 125 noted that switching from the Diablo Rosso II to the Diablo Rosso IV completely eliminated cupping issues over 10,000 miles.
Users running standard sportbike sizes (such as 120/70 front and 190/55 rear) on aggressive, curvy roads reported performance comparable to track-focused Corsa II tires.