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Pirelli Diablo Rosso IV

The Pirelli Diablo Rosso IV is a Max Performance Summer tire designed to be fitted to Motorcycles.

8.5
Tire Reviews Score Based on Professional Tests & User Reviews
Limited Confidence View Breakdown
Dry Grip
92%
Wet Grip
80%
Road Feedback
90%
Handling
92%
Wear
73%
Comfort
90%
Buy again
93%
6 Reviews
87% Average
20,900 miles driven
1 Tests (avg: 5th)
Pirelli Diablo Rosso IV

Pirelli Diablo Rosso IV

Summer Premium
BETA
8.5 / 10
Based on Professional Tests & User Reviews · Limited Confidence · Updated 23 Feb 2026

The Tire Reviews Score is the most comprehensive tire scoring system available. It aggregates professional test data from multiple independent publications, user reviews, and consistency analysis using Bayesian statistical methods, weighted normalisation, and recency-adjusted scoring to produce a single, reliable performance rating.

Learn more about our methodology
Wet
89.7
2x / 1 test
Dry
72
1.8x / 1 test

Cross-category scores are derived metrics that combine data from multiple test disciplines to evaluate real-world performance characteristics.

Handling
81.5
2 tests
Score Components
Professional Tests
Weight: 80%
Tests: 1
Publications: 1
Period: 2025
User Reviews
Weight: 15%
Reviews: 6
Avg Rating: 87%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.85
History Points: 10
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tire tests across multiple publications. Minimum 1 test(s) required.
  2. Normalize Positions: Convert test positions to percentile scores using exponential weighting (factor: 1.2).
  3. Apply Recency Weighting: More recent tests are weighted higher with a decay rate of 0.95.
  4. Incorporate User Reviews: Factor in user review data (minimum 5 reviews). Weight: 15%.
  5. Bayesian Smoothing: Apply Bayesian prior (score: 7, weight: 1.5) to prevent extreme scores with limited data.
  6. Calculate Final Score: Combine all components using normalization factor of 1.1. Max score with limited data: 9.5.
Component Weights
Test Data
80%
User Reviews
15%
Consistency
5%
All Configuration Parameters
ParameterValueDescription
safety_weight 0.7 Weight multiplier for safety-related metrics
performance_weight 0.55 Weight multiplier for performance metrics
comfort_weight 0.4 Weight multiplier for comfort metrics
value_weight 0.45 Weight multiplier for value-for-money metrics
user_reviews_weight 0.15 How much user reviews contribute to the final score
test_data_weight 0.8 How much professional test data contributes to the final score
consistency_weight 0.05 How much score consistency contributes to the final score
recency_decay_rate 0.95 Rate at which older test results lose influence (higher = slower decay)
min_test_count 1 Minimum number of professional tests required
min_review_count 5 Minimum number of user reviews required
score_version 1.9 Current version of the scoring algorithm
score_normalization_factor 1.1 Factor used to normalize raw scores to the 0-10 scale
confidence_factor_weight 0.2 How much data confidence affects the final score
position_penalty_weight 0.2 Penalty applied for poor test positions
gap_penalty_threshold 12 Score gap (%) that triggers additional penalties
min_metrics_count 2 Minimum number of test metrics needed per test
limited_data_threshold 2 Number of tests below which data is considered limited
single_test_penalty 0.75 Score multiplier when only one test is available
critical_metric_penalty 0.7 Penalty for poor performance on critical safety metrics
critical_metric_threshold 70 Score below which a critical metric penalty applies
position_exponential_factor 1.2 Exponent used to amplify position-based scoring
position_exponential_threshold 0.9 Position percentile below which exponential scoring applies
gap_multiplier_critical 3 Multiplier for critical gap penalties
max_category_weight 2 Maximum weight any single category can have
max_score_limited_data 9.5 Score cap when data is limited
bayesian_prior_weight 1.5 Weight of the Bayesian prior in smoothing
bayesian_prior_score 7 Prior score used for Bayesian smoothing
evidence_test_multiplier 1.9 Multiplier for test evidence in confidence calculation
evidence_metric_divisor 3 Divisor for metric count in evidence calculation
evidence_review_divisor 10 Divisor for review count in evidence calculation
combined_penalty_floor 0.2
Data Sources
TestPublicationDateSizePositionMetrics
2025 Sport and Hypersport Motorcycle Tire Test PS 2025 190/55 R17 5/12 2 metrics
1
Tests
5th
Average
5th
Best
5th
Worst
Latest Tire Test Results
The Pirelli Diablo Rosso IV is a sport tire that shares many characteristics with its hypersport sibling but is more oriented toward everyday sporty usage. The extremely transparent feedback—described as allowing you to "feel everything precisely"—and short warm-up phase make the Rosso IV tremendously enjoyable to ride. Like the Metzeler M9 RR, hard pushing creates some movement in the rear, but the resulting slides remain well-controllable. It demonstrated impressive wet handling capabilities, ranking fifth overall in wet lap times among all tires tested, making it one of the better wet-weather performers while still maintaining strong dry-track capabilities.

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Top 3 Pirelli Diablo Rosso IV Reviews

Given 81% while driving a Suzuki GSXR600 K7 (180/55 R17) on a combination of roads for 7,500 spirited miles
Tires are overall great when fresh fast heating even wet grip is great but as they get used they tend to lose grip and only grips great when fully heated but if it cools down a bit it slowly loses grip again at the end i got a lot of tire spin while accelerating straight or out of corners even reduced my lean angles because couldnt trust it. Mileage not bad about 10k kms front still had little to the marker. Had a few track days havent let me down once great feedback you can brake hard even on the sides it won't slide. Had a few rear spins while accelerating out of corner on track but that might not be the tires fault :) however the tire heats up to crazy termperatures on track but never had problems with it and its not a track tire so its fine. Great tire would buy them again but it should stay consistent till the markers after that i can accept it loses grip, or maybe the track days eat it up.
May 15, 2025
Given 83% while driving a Honda PCX (120/70 R14) on a combination of roads for 10,000 spirited miles
Front only review on a PCX 125. Previously I was a bit disappointed on using DR2 as they're easily cupped in 3 months. Switching to DR4 gave much better responses. Grip on dry and wet roads are definitely better, warms up quickly, very confident to lean with. After two years and 10K miles it didn't show any signs of cupping at all, unlike the previous DR2 I've use. Great to buy again next time.
July 25, 2023
Given 97% while driving a Aprilia Tuono 1100RR (200/55 R17) on a combination of roads for 2,000 spirited miles
Front-only review. I switched from DR3 front to DRIV four on the front, DR3 on the rear still had life left. They go well together, will replace the rear next month. I thought the DR3 was the finest tire I had ever ridden in my 3 decades of riding, and the 4 is noticeably better! sticks like glue, even when brand new. Warms up quick. Solid in rain, better than my 3. Extremely predictable as I push my lean angle limit -- on this tire, farther than I've done in my career. And it's all due to the tire 'wanting more lean' all the time! very predictable and super grippy, smooth progression-- seems to suit the Tuono's handling needs really well. I've had issues on Michelins and especially Metzelers, where the front will tell you when to stop your lean -- the 4 just keeps saying "give me more!" It almost seems to grip better, the farther over I go. Remarkable.
July 14, 2023

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Latest Pirelli Diablo Rosso IV Reviews

Given 87% while driving a BMW S1000XR 2018 (190/55 R17) on mostly motorways for 800 spirited miles
I ride 4 motorcycles that use 120/70's and 190/55's. I spend most of my time on very curvy and hilly roads and ride them aggressively. When I change out my tires my chicken strips are into the "Diablo" embossing at 40 psi F /40 psi R. I had Rosso Corsa II's on all 4 bikes and have now started using Rosso IV's. In the dry with the same tire pressures the Rosso IV's have exhibited the same characteristics as my Corsa II's. I have gone to my mental lean limit (as my Corsa II's) without any change in feel or confidence. In the wet, my Rosso IV's have behaved noticably better. However this may be more of a confidence issue rather than a performance issue because I know the sipes (water courses) go much wider on these tires. I did occassionally slip on my Corsa II's but haven't yet on my Rosso IV's. There was a huge performance difference when I changed from Rosso II's to Rosso Corsa's. There was a difference (better) when I went from Rosso Corsa's to Rosso Corsa II's. I have not felt any performance difference, other than riding in the wet, going from the Rosso Corsa II's to the Rosso IV's. I am anxious to see if there will be any difference in the mileage I was getting before on my Rosso Corsa II's.
July 8, 2022
Given 84% while driving a Ducati Supersport 939 (180/55 R17) on a combination of roads for 500 spirited miles
Changed from Bridgestone in the kawasaki, to Pirelli Diablo Rosso iii in a Ducati Supersport. Happy with the change.The tire is better in precision and lean angle. Now after 2 sets of PDRIII, I tried PDRIV. Feedback, Warming Time and lean are even better. whats not better...Price(+20%)and Wear. Buy again for sure
September 26, 2021
Check out how the BEST all seasons tires perform against premium summer and winter tires!
Given 95% while driving a Suzuki GsxR 600 (180/55 R17) on mostly country roads for 100 spirited miles
2003 GSXR 600 - Was on Metz Z8s for running back and forward to work in winter conditions, have used Michelins, Bridgestone T30s and other sporty Pirellis, now better weather on the way, i hope, put these on and bike feels brand new again. Day one in wet was surprisingly good. Comfier than tired Z8s. Turn in wet and dry is great. Can brake hard on its side again. Hopefully rear hard centre will last well as these are not cheap but do perform well.
May 10, 2021
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