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RoadX RXFROST WU01 View Gallery (1)
185-295/35-65 R14-21 108 sizes Winter rated

RoadX RXFROST WU01

RoadX Tires Ultra High Performance Winter

The RoadX RXFROST WU01 is a Ultra High Performance Winter tire designed to be fitted to Passenger Cars.

1.9
Tire Reviews Score Based on Professional Tests
Limited Confidence View Breakdown
Dry Grip
60%
Wet Grip
70%
Road Feedback
50%
Handling
50%
Wear
20%
Comfort
70%
Buy again
80%
Snow Grip
80%
Ice Grip
70%
1 Reviews
61% Average
4,500 miles driven
2 Tests (avg: 51st)
RoadX RXFROST WU01

RoadX RXFROST WU01

Winter Economy
BETA
1.9 / 10
Based on Professional Tests · Limited Confidence · Updated 15 Jun 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
Category Scores
Wet
54.6
1.93x / 2 tests
Cross-Category Performance

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

Braking
54.6
2 tests
Score Components
Professional Tests
Weight: 80%
Tests: 2
Publications: 1
Period: 2022 - 2024
User Reviews
Weight: 15%
Reviews: 1
Avg Rating: 61.1%
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 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
2024 Winter 55 Tire Braking Test Auto Bild 2024 205/55 R16 47/55 1 metrics
2022 Winter Tire Market Overview Auto Bild 2022 215/55 R17 55/57 1 metrics
All Tests
View Test Results
2
Tests
51st
Average
47th
Best
55th
Worst
Latest Tire Test Results
2024 Winter 55 Tire Braking Test
205/55 R16 • 2024
47th/55
2022 Winter Tire Market Overview
215/55 R17 • 2022
55th/57
View Test Results
Size Fuel Wet Noise
14 inch
185/60R14 82 T D D 71
15 inch
195/65R15 95 T XL D C 72
195/65R15 95 T XL D C 72
16 inch
215/60R16 99 H XL D C 72
205/55R16 91 H D C 72
215/60R16 99 H XL D C 72
205/55R16 91 H E C 72
17 inch
265/65R17 112 S C C 72
215/45R17 87 H D C 72
205/50R17 89 H D C 72
225/45R17 91 H D C 72
215/55R17 94 H D C 72
235/65R17 104 S D C 72
225/50R17 98 H XL D C 72
225/50R17 98 V XL D C 72
205/50R17 89 V D C 72
225/45R17 91 V D C 72
215/55R17 94 V D C 72
215/45R17 87 V D C 72
215/55R17 98 V XL D C 72
225/45R17 94 V XL D C 72
265/65R17 112 S C C 72
225/50R17 98 H XL D C 72
225/50R17 98 V XL D C 72
215/55R17 98 V XL D C 72
235/65R17 104 S D C 72
215/55R17 94 V E C 72
225/45R17 91 H E C 72
225/45R17 94 V XL E C 72
215/45R17 87 V E C 72
215/55R17 94 H E C 72
205/50R17 89 V E C 72
205/50R17 89 H E C 72
225/45R17 91 V E C 72
18 inch
225/40R18 92 H XL D C 72
245/40R18 97 H XL D C 72
245/45R18 100 H XL D C 72
225/40R18 92 V XL D C 72
245/45R18 100 H XL D C 72
245/40R18 97 H XL D C 72
225/40R18 92 H XL E C 72
225/40R18 92 V XL E C 72
View All Sizes and EU Label Scores for the RoadX RXFROST WU01 >>

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Latest RoadX RXFROST WU01 Reviews

Given 61% while driving a BMW 530 D Sport Touring (225/45 R17) on mostly country roads for 4,500 spirited miles
Better than expected tires for the price. Had these on my winter sh'tpile in vain hope it would still move in the snow. Very pleasantly surprised with grip in wintery conditions, little wheelspin even when going quite hard from a standing start. Dry lateral grip is pretty good as you'd expect for such a soft compound, even harder to get the arse out with these than on warm summers. Never felt uneasy leaning on them through fast corners despite heavy car. Wear levels are a big downside, I've had these on for 5 months and 4,500 miles and am nearly down to the markers on both the driven wheels. I expected the winters to wear a bit faster but these are by far the fastest wearing tires I've ever seen for road cars. I usually get 2 maybe 3 seasons from winter tires but ill be amazed if these last next winter.
Helpful 883
April 6, 2022
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