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Nankang Winter Activa SV 4

The Nankang SV-4 will be available in 20 sizes from 13 to 21 inches in 2021 and a second phase with additional tire size will follow during 2022.

5.9
Tire Reviews Score Based on Professional Tests & User Reviews
Medium Confidence View Breakdown
Dry Grip
88%
Wet Grip
85%
Road Feedback
73%
Handling
87%
Wear
85%
Comfort
85%
Buy again
85%
Snow Grip
83%
Ice Grip
80%
5 Reviews
83% Average
5,710 miles driven
2 Tests (avg: 31st)
Nankang Winter Activa SV 4

Nankang Winter Activa SV 4

Winter Mid-Range
BETA
5.9 / 10
Based on Professional Tests & User Reviews · Medium 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
Comfort
80.4
0.32x / 1 test
Wet
76.6
1.93x / 5 tests
Snow
71.6
1.5x / 2 tests
Ice
60.3
1.2x / 1 test
Dry
57.5
1.13x / 1 test
Value
45.5
0.42x / 3 tests

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

Braking
71.1
6 tests
Traction
63.5
1 test
Score Components
Professional Tests
Weight: 80%
Tests: 2
Publications: 2
Period: 2025
User Reviews
Weight: 15%
Reviews: 5
Avg Rating: 83.3%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.61
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 Winter Tire Braking Test - 52 Sets! Auto Bild 2025 225/40 R18 40/52 1 metrics
2025 ADAC Winter Tire Test ADAC 2025 225/40 R18 22/31 12 metrics
2
Tests
31st
Average
22nd
Best
40th
Worst
Latest Tire Test Results
40th/52
2025 ADAC Winter Tire Test
225/40 R18 • 2025
22nd/31
The Nankang Winter Activa 4 receives poor ratings on dry and winter roads resulting in poor overall driving safety, with only satisfactory wet performance and adequate environmental ratings for a poor overall judgment. On dry roads, it shows poor responsiveness and steering feedback with very imprecise handling requiring constant corrections, oversteering tendencies during dynamic maneuvers with adequate limit behavior, and narrowly misses good braking distances. On wet surfaces, it achieves only satisfactory ratings across all criteria including braking, aquaplaning resistance, and handling with moderate grip levels and the need for better force combination. In winter conditions, it receives poor ratings overall despite satisfactory snow braking and traction performance, with poor handling due to inadequate force combination resulting in very imprecise control, very low limits, and early under/oversteering tendencies, plus adequate ice braking performance. This Chinese-manufactured tire receives adequate environmental ratings with the lowest predicted mileage in the test, satisfactory tire wear, and narrowly missing good efficiency ratings.

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Top 3 Nankang Winter Activa SV 4 Reviews

Given 97% while driving a GMC Terrain (235/60 R18) on a combination of roads for 10 spirited miles
Top one of the winter tire ! Try to follow me with that hahahaha !!! Good luck !!!!
January 7, 2025
Toyota Auris (205/55 R16) on a combination of roads for 3,000 average miles
Just as an update to my previous review as I have had these on for another winter. I'm still happy with the tires overall, but have found they can struggle for grip in damp conditions. For instance, going round a roundabout at 20mph my car lost grip.

Wear still seems good, the tread has not dropped too much
January 23, 2024
Given 87% while driving a BMW 320 (205/55 R16) on a combination of roads for 200 spirited miles
I bought this tires because of the price, the 'B; grading for wet braking and for the 'V' speed indicator that was needed for my car(by law, not that I drive with 240 kmh). I only used them for about a month so far and in cold temperatures, ranging from 0 to 5C , they behave and feel the as good as my summer Michelin Primacy 4's. I drove them on B roads as well and the grip is good, the braking is good and also the confort. I will keep this thread updated once snow falls and I get more miles on them. But so far, they seem to be good. For 50EUR a tire, I cant really complain, can I?
December 6, 2022

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Latest Nankang Winter Activa SV 4 Reviews

Given 76% while driving a Toyota Auris (205/55 R16) on a combination of roads for 500 average miles
Had these SV4's throughout this winter and have used them in snow, ice, sludge, wet and dry conditions. They seem to grip well. I much prefer them to the Kleber winters I had before which made a lot more noise. All in all I am happy with them. They were good value when I got them too. I couldn't comment about how many miles I will get out of a set as it is too early to say.
January 1, 2023
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