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Michelin Primacy Alpin PA3

The Michelin Primacy Alpin PA3 is a Premium Touring Winter tyre designed to be fitted to Passenger Cars.

6.5
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
91%
Wet Grip
95%
Road Feedback
91%
Handling
76%
Wear
96%
Comfort
86%
Buy again
91%
8 Reviews
90% Average
37,416 miles driven
Michelin Primacy Alpin PA3

Michelin Primacy Alpin PA3

Winter Premium
BETA
6.5 / 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: 8
Avg Rating: 89.7%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 1.95
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 Michelin Primacy Alpin PA3 Reviews

Given 61% while driving a Honda Accord (205/55 R16) on a combination of roads for 6,000 average miles
Good choice. One of the best winter tyre.
April 18, 2014
Given 96% while driving a Subaru BRZ (215/45 R17) on a combination of roads for 300 average miles
I went to a short skiing holiday and drove my new car with anew set of winter tyres over the weekend
Rain on motorway, black ice uphil and a mixture of snow and ice towards the hotel at the top of the mountain (- 9 C). And driving at night on a previously unknown icy mountain road was something I would love to anticipate but withsthe family on board, that was not the case at all.
Driving a real wheel drive car in those conditions always merits extra care. I was carefjl and I felt safe at all times. Car behaved greatly as I thought Subaru would and this is due to the Michelins as well.
Great tyres, tested and prover.
February 3, 2013
Given 89% while driving a BMW 320D (225/45 R17 H) on a combination of roads for 10,000 average miles
I Purchased a set of these & a set of 17" replica alloys in the Winter of 2009 when it became clear just how bad RWD and Summer tyres were with even just a light dusting of snow.
Excellent wet weather grip & handling, good in the dry. Comfort is light years ahead of the OEM Bridgestones.
The Winter of 2010 was about as hard as I'm ever likely to push them and they never let me down.

The only negative thing I can say about them is traction in deeper snow maybe isn't quite as good as some of their competitors - there was always a little more wheelspin than you'd expect but maybe that's being hyper critical .

However when driving in tricky conditions there was bags of cornering and braking grip available.

After two hard Winters all 4 tyres have 7mm tread remaining (10.5mm when new) which I think is impressive. I'll probably run these for one more Winter then switch to the new Alpin A4 or perhaps the Dunlop 4D.

Overall a great tyre for UK Winters. They excel in cold damp conditions and are easily capable of handling the exceptional amounts of snow we saw in 2010.


October 13, 2011

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Latest Michelin Primacy Alpin PA3 Reviews

Given 92% while driving a SEAT Leon SE Ecomotive 1.6 (205/55 R16 H) on a combination of roads for 16 average miles
I've just put these back on my Leon for their second winter season. They are wonderful winter tyres: quiet, comfortable and have excellent stopping power on cold mornings. They feel safer than my summer tyres (Pirelli P7 and previously Pirelli Pzero Nero) when it's cold and damp - i.e. most of winter in the UK - and they work well in snow too: I've driven home over hilly country lanes with about 3-4 inches of fresh snow on top of compacted snow/ice with only a few flashes of the TCS/ESP light. With my previous (summer) tyres, I had to resort to snow chains in similar circumstances or I'd have to abandon the car at the bottom of the steep hill.
The PA3s are slightly noisier than the Pirelli P7s, but much quieter than Pirelli P-Zero Neros - I think they're quiet for a winter tyre. They do tend to 'sing' when driving through standing water at high speed though. If you are nervous about driving during blizzards or other bad winter weather, I highly recommend these tyres. On dual carriageways, you can confidently drive on the slushy lane that everyone else is avoiding. They are quite stable during cornering - not excessively 'squishy' - but they don't match a good summer tyre on warmer days, of course.
October 19, 2010
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