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Nankang RX615 View Gallery (1)
145-225/45-80 R13-17 45 sizes 2012

Nankang RX615

The Nankang RX615 is a High Performance Summer tyre designed to be fitted to Passenger Cars.

6.6
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
70%
Wet Grip
53%
Road Feedback
78%
Handling
73%
Wear
85%
Comfort
90%
Buy again
68%
5 Reviews
74% Average
121,000 miles driven
Nankang RX615

Nankang RX615

Summer Mid-Range
BETA
6.6 / 10
Based on User Reviews · Limited Confidence · Updated 30 Jan 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: 5
Avg Rating: 73.6%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 1.98
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 1.8 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 8 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 0.1 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
All Tests

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Top 3 Nankang RX615 Reviews

Given 49% while driving a Ford Mustang gt (225/60 R16) on a combination of roads for 6,000 spirited miles
These tyres came on my Mustang GT. On the dry they are fine. On the wet simply dangerous. I don't know what the previous owner was thinking but I guess he drove slow. On a tight 270° turn I was shocked how easily the car would skid. Also acceleration was like on being on ice/snow. Worthless. Maybe a good tyre for drifters. The only positive side that they last quite well. The production date shows its from 2011 and it shows hardly any wear. This will be the final month.
Ask a question | Helpful 751
October 29, 2022
Suzuki (145/45 R17 N) on a combination of roads for 1,000 average miles
comfortable tires
October 27, 2018
Given 100% while driving a Mitsubishi Adventure (225/45 R17) on a combination of roads for 100,000 average miles
I ilke this tire..have been using it for 2 years...
September 25, 2013
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Latest Nankang RX615 Reviews

Given 70% while driving a Toyota Yaris (175/70 R14) on mostly motorways for 8,000 average miles
great tyres if you want comfort and noiseless tyres for your car, dont expect too much in terms of dry grip, not tired them in rainy season yet. i tired turning at 50 KPH almost went into the railing this was right after i replaced them with Dunlop LM 702 185/65 14 (great tyres BTW not comfortable though)
February 15, 2012
Given 76% while driving a Rover 620 (225/45 R17) on mostly town for 6,000 average miles
Very reasonable tyres with quite attractive tread pattern. These have worked well on my old Rover 600. Noteably quieter than others I have tried and a real step up from some other budget tyres
September 9, 2011
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