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Bridgestone Potenza s03

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The Bridgestone Potenza s03 is a Max Performance Summer tyre designed to be fitted to Passenger Cars.

5.8
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
86%
Wet Grip
54%
Road Feedback
70%
Handling
67%
Wear
71%
Comfort
60%
Buy again
61%
7 Reviews
67% Average
62,500 miles driven
Bridgestone Potenza s03

Bridgestone Potenza s03

Summer Premium
BETA
5.8 / 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: 0
Publications: 0
User Reviews
Weight: 15%
Reviews: 7
Avg Rating: 67.1%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.2
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
All Tests

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Top 3 Bridgestone Potenza s03 Reviews

Given 56% while driving a Volkswagen Golf 1.9 Tdi (225/45 R17) on mostly town for 20,000 easy going miles
I managed to get these tyres from a mate who worked at Porsche at the time so I couldn't grumble at the price, however when you realise its the tyres that connect you to the road you really need to look elsewhere. They are alright in the dry they do loose grip round islands though so you cant push em very hard. My rears are now Vredestrien sessanta's so they are over compensating for the Bridgestone's lack of grip. I'm dying to get some new tyres up front but the bridgestone's have honestly lasted forever. They are the best wearing tyres I have owned even if they are poor in the wet. I can't even pull out of junctions without them spinning, they are scary in the wet. They have a really good tyre wall and rim saver so they will protect your alloys pretty well. I am generally a steady driver so don't think the spinning comes from over excitable take offs. report based on a 25th Anniversary TDi Golf

Helpful 481
February 21, 2011
Given 57% while driving a BMW E90 320d (245/35 R19 W) on a combination of roads for 15,000 average miles
These tyres came fitted to a set of AC Schniters i bought and had only covered a few thousand miles max before i got them. When pushed hard in the dry they never gave me any trouble, and i could rely on them in sticky situations. It was difficult to know how 'on the limit' you were. In the wet the fronts done well under braking, but the rears were always keen to try and break away under acceleration. I had terrible tram-lining with these tyres, terrible! The make up of the tyres must be very hard, not a comfortable ride (grit your teeth when you spot a pot hole) and not the quietest tyres but not bad. Also made the steering feel heavy and a bit 'dead'. All in all, a decent tread, but dated by todays tyre making technology.
Helpful 480
March 2, 2010
Given 73% while driving a Skoda Octavia vRS (225/45 R17 W) on a combination of roads for 7,000 spirited miles
These S-03s are probably the best overall tyre I've used yet. Amazing in the dry, decent in the wet (for a bridgestone). Can spin/judder when launching on damp/wet roads but way better in the wet than the stock Potenza RE040s were when I had a Civic Type-R (EP3). Nice stiff sidewalls make them a bit crashy at times but they do handle like you are on rails so worth it.

Helpful 504
December 17, 2007

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Latest Bridgestone Potenza s03 Reviews

Given 53% while driving a Toyota MK2 MR2 Turbo (225/45 R16 W) on track for 500 spirited miles
Take a little time to warm up, once warm impressive dry grip and gentle break away considering the grip, suspect not far behind a full on track tyre (in the dry at least), pretty useless in the wet, spinning up easily, especially when cold
Helpful 501
June 5, 2007
Given 77% while driving a BMW Z1 (225/45 R16 W) on a combination of roads for 0 spirited miles
These were excellent compared to the Dunlop SP Sport 9000s that preceded them and I really did think I would be buying them again. They gave very good grip, wet and dry and road feel was really impressive. However, at the time I needed to replace them, I couldn't get stock.

A very good tyre.
Helpful 451
June 1, 2007
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