Menu

Kumho Solus 4S HA32+

The Kumho Solus 4S HA32 Plus is a Premium Touring All Season tyre designed to be fitted to Passenger Cars.

8.3
Tyre Reviews Score Based on Professional Tests
High Confidence View Breakdown
Dry Grip
78%
Wet Grip
78%
Road Feedback
65%
Handling
63%
Wear
80%
Comfort
73%
Buy again
68%
Snow Grip
80%
Ice Grip
70%
4 Reviews
73% Average
48,500 miles driven
7 Tests (avg: 10th)
Kumho Solus 4S HA32 Plus

Kumho Solus 4S HA32 Plus

All Season Mid-Range
BETA
8.3 / 10
Based on Professional Tests · High 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
Snow
78.6
1.38x / 16 tests
Ice
76
0.84x / 1 test
Comfort
69.7
0.32x / 7 tests
Wet
64
1.93x / 23 tests
Value
63.3
0.42x / 18 tests
Dry
60.6
1.5x / 11 tests

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

Traction
84.9
4 tests
Handling
69.6
12 tests
Braking
69.4
21 tests
Score Components
Professional Tests
Weight: 80%
Tests: 7
Publications: 3
Period: 2022 - 2025
User Reviews
Weight: 15%
Reviews: 4
Avg Rating: 72.5%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.5
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
2025 Mid Range All Season Tyre Test Wybór Kierowców 2025 215/55 R17 4/6 6 metrics
2024 AutoBild All Season Tyre Test Auto Bild 2024 225/50 R17 13/17 17 metrics
2024 All Season Tyre Market Overview Auto Bild 2024 225/50 R17 15/37 2 metrics
2024 ADAC All Season Tyre Test ADAC 2024 205/55 R16 5/16 13 metrics
2023 Auto Bild All Season Tyre Test Auto Bild 2023 225/45 R17 10/18 17 metrics
2023 All Season Tyre 35 Set Shootout Auto Bild 2023 225/45 R17 15/35 2 metrics
2022 Auto Bild All Season Tyre Test Auto Bild 2022 195/55 R16 5/17 19 metrics
7
Tests
10th
Average
4th
Best
15th
Worst
Latest Tyre Test Results
4th/6
The Kumho Solus 4S HA32+ shares third place with the Dębica, showing a similar characteristic of balanced parameters across different surfaces. The Korean tyre outperforms the Dębica on wet surfaces and snow, providing better grip in these conditions. It also features a low rolling resistance coefficient, contributing to good fuel efficiency. The tyre's strength lies in its consistent behavior across varying conditions, making it predictable for drivers. However, it loses points to the Dębica on dry asphalt performance and in the rolling resistance category. While it doesn't win any individual test, its average performance on lateral wet grip is noted, and it shows an extended braking distance on dry surfaces, which are its main drawbacks.
5th/16

The Kumho Solus 4S HA32+ tyre receives only a satisfactory rating for safety on both dry and wet roads, but manages to secure a good rating in winter conditions. On dry surfaces, it shows its weakest performance, offering average steering feedback and lacking precision. The driver needs to make occasional corrections, and the tyre could be more stable during dynamic evasive maneuvers. Its braking distance is slightly below average.

On wet roads, the Kumho also misses a good rating. While it achieves a good score in braking tests, it only receives satisfactory ratings for aquaplaning behavior and handling. The tyre struggles to combine longitudinal and lateral forces effectively, showing too much under- or oversteer for precise control on the handling course.

In winter conditions, the Solus 4S HA32+ impresses with good performance. It scores well in braking and traction tests, and also secures a good rating in handling. The test vehicle can be maneuvered precisely and safely through the course with good reserves. Its ice braking performance is rated as just good.

Environmentally, the Korean-made Kumho Solus 4S HA32+ achieves a good result. It scores well in projected mileage and wear. Its efficiency is rated as just good, with a slightly high weight compared to the test field, but acceptable fuel consumption.

.
15th/37

Questions and Answers for the Kumho Solus 4S HA32 Plus

Ask a question
Sorry, we don't currently have any questions and answers for the Kumho Solus 4S HA32 Plus. Why not submit a question to our tyre experts using the form below!
Ask a question

We will never publish or share your email address

captcha

To verify you are human please type the word you see in the box below.

Top 3 Kumho Solus 4S HA32 Plus Reviews

Given 71% while driving a Citroën xsara picasso (185/65 R15) on a combination of roads for 0 miles
On a Xsara Picasso, they provide safety in the wet, are comfortable on uneven surfaces, but are somewhat noisy. Greater rolling resistance increases fuel consumption somewhat. The softer casing provides more noticeable drift, and the reactions are predictable. A good tire for relaxed drivers looking for safety in wet and snow conditions.
May 10, 2025
Given 71% while driving a Opel meriva (185/60 R15) on a combination of roads for 45,000 spirited miles
In snow, the longitudinal (throttle, brake) feels very weak. But the lateral grip is somehow perfectly fine. Its characteristics make it unsteady to drive, because it gives much more in a corner than in a single brake application, where you have to count on it to slide.
November 21, 2024
Given 83% while driving a Citroën xsara picasso (185/65 R15) on a combination of roads for 2,500 average miles
I took a chance on some Kumho Solas 4S HA32 Plus tyres for here in England this year, as a mid-budget all season tyre with the 3 peaks symbol.

Don't confuse the Plus model with the previous HA32 model, these are a much improved design.

With all the snow, frost, and sub 5°c weather in England this 2024 to 2025 winter, my Kumhos been fantastic so far, irrespective of price.

As I don't have £600 to drop on tyres at a moments notice, I chose the Kumhos 4S HA32 Plus.

I had to get rubber fitted quickly, as I bought a car with four mismatched makes. I think there were two Runway branded on opposite corners of different types. Not ideal.

Road noise is acceptable, and a much lower pitch than the mismatched set was, making them similarly loud but masses less intrusive.

Cold and wet grip has been the biggest improvement, with junction traction being faultless despite all the oil and diesel rainbow soaked tarmac.

Fuel economy has dropped by perhaps 5%, but the much more comfortable, quiet, assured, and smooth performance of the Kumhos more than making up for that.

Dry weather braking and steering is reasonable, but these aren't high performance summer tyres, so feedback is muted but still present.

Mildly slippery mud and wet grass poses no issues for these tyres, where before I would have to be very careful where to park.

Aquaplaning has been genuinely eradicated for me. The steering never goes light, nor does the back end twitch in a deluge.

I had tracking, balancing, alignment, and new valve stems done when I had the Kumhos rubber fitted, and wear has been equal and minimal over the last 2500 miles.

These aren't the perfect tyres, but they offer everything a family car should need with good braking, acceleration, cornering, and performance in bad conditions.
February 18, 2025

How would you rate the Kumho Solus 4S HA32 Plus?

Click a star to start your review

Latest Kumho Solus 4S HA32 Plus Reviews

Given 57% while driving a Toyota Corolla (205/55 R16) on a combination of roads for 1,000 average miles
Better than Chinese brands but not even close to premium brands. Only for calm drive
November 26, 2025
Rate the Kumho Solus 4S HA32 Plus