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Nitto NT555

The Nitto NT555 is a Ultra High Performance Summer tyre designed to be fitted to Passenger Cars.

6.4
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
75%
Wet Grip
63%
Road Feedback
70%
Handling
72%
Wear
65%
Comfort
67%
Buy again
67%
6 Reviews
68% Average
42,018 miles driven
Nitto NT555

Nitto NT555

Summer Mid-Range
BETA
6.4 / 10
Based on User Reviews · Limited Confidence · Updated 23 Feb 2026

The Tyre Reviews Score is the most comprehensive tyre 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
Score Components
Professional Tests
Weight: 80%
Tests: 0
Publications: 0
User Reviews
Weight: 15%
Reviews: 6
Avg Rating: 68.3%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.11
History Points: 10
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tyre 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
All Tests

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Top 3 Nitto NT555 Reviews

Given 51% while driving a Ford Mustang gt (235/50 R18 W) on a combination of roads for 15,000 spirited miles
Tires do not provide the traction I need in the dry or wet. I can spin the tires at 25% throttle. Wet traction is even worse. Would not recommend this tire for vehicles with over 300 HP or around that figure. Tires slip and do not provide a confident driving experience. Apart from that the road noise is fairly loud especially on the highway. And this is coming from a straight piped V8 mustang...
December 20, 2018
Given 91% while driving a Daihatsu Perodua Myvi (195/45 R15) on a combination of roads for 1,000 spirited miles
feels planted abit like semi slick on dry roads..best summer tyre money can buy! done 35000km still grips strong although front 50% rear 30%
August 17, 2015
Given 89% while driving a Toyota Perodua Myvi Toyota Passo (195/50 R15) on a combination of roads for 18 spirited miles
One of the best tire for Summer Performance Tire...car feels planted & the more you push its feels like sticky on the road which gives excellent grip!
Used Yokohama C-Drive 2 before, good tires brilliant in wet, Nitto NT555 compared to Toyo T1R..friends both drive Honda Civic same car one T1R another NT555, NT555 accelerates faster in straight line...besides that its much more quiet than T1R...this tire had been reviewed & its mainly for enthusiasts/ tuners who wants most etc cornering, straight line acc..it simply delivers!! As mentioned its "Fueled by Enthusiast"..
May 19, 2015

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Latest Nitto NT555 Reviews

Given 21% while driving a Ford Focus 2.0 S TDCi (225/40 R18) on mostly motorways for 6,000 average miles
terrible
February 15, 2014
Given 70% while driving a BMW 520d (225/45 R17) on mostly motorways for 20,000 spirited miles
This tyre is soft suit for summer. Sporty looks

Grip is fine on dry roads. On wet is fair enough for only 100-140 km/h.

The only flaw I found us little noise from the tyre when I drive around 50-70 km/h.

And this tyre after 35,000 km will keep losing grip and become noisy.
June 7, 2012
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