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Kormoran Impulser B2

The Kormoran Impulser B2 is a Touring Summer tyre designed to be fitted to Passenger Cars.

6.7
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
70%
Wet Grip
57%
Road Feedback
61%
Handling
60%
Wear
84%
Comfort
79%
Buy again
60%
7 Reviews
67% Average
93,006 miles driven
1 Tests (avg: 15th)
Kormoran Impulser B2

Kormoran Impulser B2

Summer Economy
BETA
6.7 / 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: 1
Publications: 1
Period: 2014
User Reviews
Weight: 15%
Reviews: 7
Avg Rating: 67.3%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.04
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
2014 ADAC 175/65 R14 Summer Tyre Test ADAC 2014 175/65 R14 15/16 0 metrics
1
Tests
15th
Average
15th
Best
15th
Worst
Latest Tyre Test Results
15th/16
Very weak in the wet, slightly higher fuel consumption and wear

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Top 3 Kormoran Impulser B2 Reviews

Given 83% while driving a Toyota Corolla AE101 (165/70 R14) on mostly country roads for 6 average miles
Good tyre in dry roads, a little weak in wet. Brake is ok in dry, little weak in wet. Aquaplaning is ok, wear very good,comfort very good. If you driving normal the tyre its good. The new name is Kormoran Road not Impulser2. The same tyre make another 2 brands. Orium and Tigar.
April 9, 2023
Given 47% while driving a Citroën saxo 1.1 (225/45 R17) on mostly country roads for 28,500 average miles
They are for very easy going driving style. In the wet is spinning like crazy after some miles and makes every corner dangerous. They are very nice in the dry and open road. In the dry the braking is very easy for them but in the wet they are scare!
September 16, 2019
Given 84% while driving a Fiat Grande Punto 1.4 8v (175/65 R15 T) on a combination of roads for 6,200 average miles
The Tyres are very good for it's price better than other brands with good handling
June 26, 2018

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Latest Kormoran Impulser B2 Reviews

Given 86% while driving a Fiat Grande Punto 1.4 8v (175/65 R15 T) on a combination of roads for 4,300 average miles
I have these tyres about a year (7000km) (4300miles)
They are very good also its price
I would buy them again.
May 7, 2018
Given 86% while driving a Fiat Grande Punto 1.4 8v (175/65 R15 T) on a combination of roads for 0 average miles
I have these tyres for a year
Find them very good better than the stock perilli p4 which were pretty bad handle wise .
Cheap good I'll buy again
August 7, 2017
Check out how the BEST all seasons tyres perform against premium summer and winter tyres!
Given 36% while driving a Opel Astra F 1.6 101 hp (175/65 R14) on mostly motorways for 4,000 easy going miles
Not very good in the wet, only average dry performance. The tyres makes me brake 20 meters earlier than usual. They last forever, but very noisy.
May 28, 2014
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