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Riken Snowtime B2 View Gallery (1)
155-185/60-80 R13-14 12 sizes 2007 Winter rated

Riken Snowtime B2

The Riken Snowtime B2 is a Touring Winter tyre designed to be fitted to Passenger Cars.

6.6
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
78%
Wet Grip
67%
Road Feedback
62%
Handling
55%
Wear
87%
Comfort
88%
Buy again
83%
Snow Grip
95%
Ice Grip
90%
6 Reviews
78% Average
70,300 miles driven
3 Tests (avg: 38th)
Riken Snowtime B2

Riken Snowtime B2

Winter Economy
BETA
6.6 / 10
Based on User Reviews · Limited Confidence · Updated 30 Jan 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: 3
Publications: 1
Period: 2012 - 2017
User Reviews
Weight: 15%
Reviews: 6
Avg Rating: 78.3%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 2.46
History Points: 6
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 1.8 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 8 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 0.1 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
Data Sources
TestPublicationDateSizePositionMetrics
2017 50 Winter Tyre Shoot Out Auto Bild 2017 225/50 R17 40/45 0 metrics
2013 Winter Tyre Overview - Braking Auto Bild 2013 195/65 R15 37/50 0 metrics
2012 Auto Bild 42 Winter Tyre Braking Test Auto Bild 2012 205/55 R16 38/43 0 metrics
3
Tests
38th
Average
37th
Best
40th
Worst
Latest Tyre Test Results
40th/45
37th/50
Size Fuel Wet Noise
13 inch
175/70R13 82 T E D 68
155/70R13 75 Q E D 68
165/70R13 79 T E D 68
14 inch
155/65R14 75 T E D 68
185/60R14 82 T E D 68
175/80R14 88 T D D 68
165/65R14 79 T E D 68
175/65R14 82 T E D 68
185/70R14 88 T E D 68
165/70R14 81 T E D 68
175/70R14 84 T E D 68
185/65R14 86 T E D 68
View All Sizes and EU Label Scores for the Riken Snowtime B2 >>

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Top 3 Riken Snowtime B2 Reviews

Given 87% while driving a BMW 318D (205/55 R16 H) on mostly motorways for 35,000 easy going miles
Always dubious with unknown brands, but having run various winter tyres over the years I thought I would try Riken.

Great snow performance and great in standing water, wear has been surprisingly good, i will definitely purchase again. In fact as I swap my tyres (summer/winter) I have purchased some Riken summer tyres to run along side the Snowtimes.
Ask a question | Helpful 795
November 2, 2019
Given 66% while driving a Citroën C3 (195/55 R16) on mostly town for 10,000 average miles
Good tyre for city and occasional out of town/motorway driving. The grip in both dry and wet is not the best but is good enough for a normal driving style, I didn't expect nothing more from a budget oriented tyre. The difference in stopping distance between this and a summer tyre is noticeable but not excessive. Noise level is very good, much lower than most winter tyres and definitely quieter than the Continental I have on my other car. In very cold temperature and little snow and ice the performance is great I was able to climb up and get down a mountain road during a snowfall and i didn't felt frightened. Used this tyre for 2 winters and over 10000miles and I'll make it as many before changing them. Bought the same tyre for my father's car (215/50 R17) and he was of the same opinion.
December 20, 2018
Given 77% while driving a Ford Mondeo 2008 1.6 (205/55 R16 V) on a combination of roads for 15,000 average miles
This is an update to my earlier review where I stated it was a relief to get the summer tires on. New rear shocks at 30K resolved the odd handling! The Riken's have been back on the car three times, once until June. I think the wet grip got better with a little wear and they are lasting very well. This year they were a joy to refit after removing noisy Nankang NSII tires, so much quieter and a relief to find it was not an issue with the car. they still have so much tread I might not bother changing for the summer.
February 16, 2017
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Latest Riken Snowtime B2 Reviews

Given 79% while driving a Jaguar X Type 2.0 FWD (205/55 R16) on mostly motorways for 6,000 average miles
As expected, much better grip in the snow than the Pirelli summers they replaced.
Pleasantly surprised that they are also quieter, and fuel economy has improved 5%. This is compared to Pirelli 16".
I also ran Pirelli 17" summer previously and found the move to 16" summer improved ride quality and reduced noise as well, so with the move to 16" and winter the effects were cumulative
January 26, 2013
Given 61% while driving a Ford Mondeo 2008 1.6 (225/45 R17) on a combination of roads for 3,000 average miles
Fitted December 2011. Only one day of snow but noticeably better control than my recollection of the previous year in the snow. In non-snow conditions the handling of car is different with lower limits than the summer tyres (Mitch Pilot Prem) in both dry and wet. It has been interesting to observe the car stability control helping to save me from big moments. I just have to remember to drive slower and not push on roundabouts or bends particularly in the wet as they let go suddenly. Was a relief to get the summer tyres back on after the winter. Minimal wear in 3k miles. Note Michelin appear to own Riken.
December 20, 2012
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