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Nokian zLine AS

Nokian Tyres Ultra High Performance All Season Next

The Nokian zLine AS is a Ultra High Performance All Season tyre designed to be fitted to Passenger Cars.

4.2
Tyre Reviews Score Based on Professional Tests
Limited Confidence View Breakdown
Dry Grip
93%
Wet Grip
97%
Road Feedback
90%
Handling
90%
Wear
83%
Comfort
80%
Buy again
93%
Snow Grip
70%
Ice Grip
60%
3 Reviews
84% Average
16,500 miles driven
1 Tests (avg: 2nd)
Nokian zLine AS

Nokian zLine AS

All Season Mid-Range
BETA
4.2 / 10
Based on Professional Tests · 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
Category Scores
Dry
83.5
1.5x / 2 tests
Snow
77.3
1.38x / 2 tests
Wet
71.5
1.93x / 2 tests
Ice
40
0.84x / 1 test
Cross-Category Performance

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

Handling
84.9
3 tests
Braking
63.1
4 tests
Score Components
Professional Tests
Weight: 80%
Tests: 1
Publications: 1
Period: 2019
User Reviews
Weight: 15%
Reviews: 3
Avg Rating: 84.1%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 1.23
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
Data Sources
TestPublicationDateSizePositionMetrics
Summer, All Season, All Weather, Winter, Nordic Winter and Studded Tyres Tested Tyre Reviews 2019 205/55 R16 2/6 7 metrics
All Tests
View Test Results
1
Tests
2nd
Average
2nd
Best
2nd
Worst
Latest Tyre Test Results
Summer, All Season, All Weather, Winter, Nordic Winter and Studded Tyres Tested
205/55 R16 • 2019
2nd/6
View Test Results

Questions and Answers for the Nokian zLine AS

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November 18, 2018

Why they are not selling to Europe this tyres?

The European and North American tyre markets are quite different. The European Nokian all season tyre is the Weatherproof, which is far better in snow and ice than the zLine AS
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Top 3 Nokian zLine AS Reviews

Given 80% while driving a BMW 740i (235/55 R17) on a combination of roads for 15,000 spirited miles
I have been very impressed with these tires on my 1997 BMW 740i. I drive it very hard and often way too fast but never have they caused me and concern. I replaced an older but almost new set of Bridgestone touring tires and these were better in every way I could imagine. They are very predictable on hard cornering and have the high XL road rating my large and heavy car needs. If there was a concern that surprised me it is that the tires did not handle as well as I had expected of Nokian in snow and ice conditions. While I usually use dedicated snow tires, I tend to leave a change out until there is more consistant winter weather. I had heard that Nokian tires were particularly good in snow and wet. I find that in the wet they do perform well but in snow and ice they are only average. I would not call them spectatcular like I do in dry conditions. They are not bad in any way but I only rated them a 6/10 in ice because I was no longer able to risk spirited driving and had to tone it down a bit. I would definitely buy these again for this tire with no reservations and I have never had as good a tire on my car. A final note is that I choose the All season over summer only tires for two reasons. The first is that I tend to run into winter conditions before changing tires and secondly I was told the treadwear rating of the summer was on the order of 40-50,000 km where the All seasons was 65-75,000 seasons. Quite a difference in life span and worth the extra weather coverage
Helpful 846
April 8, 2022
Given 90% while driving a Volkswagen 1.8 20vT Sport (205/50 R16 V) on mostly town for 1,000 average miles
Very good tire for the price. Good grip in summer and not bad in the snow despite that it is not its first vocation.
A little bit noisy at low speed but good at highway speed.
Helpful 493
October 6, 2017
Given 94% while driving a Volkswagen Golf V5 (205/55 R16 W) on mostly town for 500 average miles
Very good !
Wet Grip and handling is twice better than my old Hankook tire.
Little bit "grinding" noise at very low speed but ok on highway speed
Also tried on snow and grip is very good if you have to use it in snow sometimes.


Helpful 487
May 2, 2017

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