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Lassa Phenoma

The Lassa Phenoma is a Ultra High Performance Summer tyre designed to be fitted to Passenger Cars.

6.3
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
82%
Wet Grip
79%
Road Feedback
74%
Handling
63%
Wear
88%
Comfort
79%
Buy again
83%
19 Reviews
78% Average
216,390 miles driven
Lassa Phenoma

Lassa Phenoma

Summer Economy
BETA
6.3 / 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: 19
Avg Rating: 78.3%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.04
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

Sorry, we don't currently have any magazine tyre tests for the Lassa Phenoma

Size Fuel Wet Noise
16 inch
225/50R16 92 W D B 71
205/45R16 87 W XL D B 68
18 inch
225/40R18 92 W XL D B 70
View All Sizes and EU Label Scores for the Lassa Phenoma >>

Questions and Answers for the Lassa Phenoma

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June 21, 2020

I have 4 pieces of Lassa Phenoma L5H8 9920 2313 225/45R17 91W mounted On Alufelgen. There is no rotation sign, i can not find on the tyres. Inside-outsides ok. But if i mount them the V shape pattern on the right side of the car rotating the opposite direction. Is that OK.?? Or the seller cheated and sold me 4 pieces only Left side tyre?? Does it have left or right side type? thank you the answer!

This is normal for that tyre, as long as they all say "outside" on the outside they are mounted correctly.
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Top 3 Lassa Phenoma Reviews

Given 30% while driving a (225/45 R17) on for 0 miles
Lassa tyre very easily to get puncture. Every month at least 1 tyre puncture by nail. The rest of it is ok though.
December 29, 2022
Given 94% while driving a Skoda (235/45 R18) on a combination of roads for 15,000 miles
As a Michelin die-hard I wasn't pleased when my employer insisted on Phenoma as his tyre of choice! As a national sales rep I spend a long time on the road and demand alot of my tyres. However, I was seriously impressed...I couldn't fault them!! I would buy them again and would have no hesitation in recommending to anyone.
December 29, 2020
Mazda (225/45 R18) on mostly motorways for 20,000 spirited miles
Worst summer tyres I have had in my 22 years of driving experience. Very poor grip in dry and wet. Grip is ok only in very very hot days. For 2 years of driving and after 20000+miles they showed very little wear. Very noisy when breaking. Poor handling and understear in more agresive driving in the mountain roads. Absolutely I do not recomend this tyre.
November 19, 2017

How would you rate the Lassa Phenoma?

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Latest Lassa Phenoma Reviews

Given 81% while driving a Audi A6 (245/40 R18 W) on a combination of roads for 10,000 spirited miles
I had these tyres fitted after a set of nankang NS20s desintigrated. I wish i had found these tyres first, for the price they are amazing. Wet grip is excellent, dry grip is phenominal {no pun intended}. They are to be totally fair a little noisey but i can live with it for the price. I will definately be buying these again.
December 8, 2016
Given 94% while driving a SEAT Altea (205/55 R16 W) on mostly country roads for 15,000 average miles
The tyre made by Bridgestone and the tyre you can rely on. Strongly recommended.
May 22, 2016
BMW (225/50 R16 W) on a combination of roads for 60 average miles
I used these tyres for the 3rd time in a row now and never a disappointed with it. They last for a very long time and drive comfort and handling is nothing short compared to the top brands. I think these tyres deserve better reviews. Used these tyres for over 60,000 miles before these I tried Bridgestone and Michelin tyres they where very good but for half the price you can get tyres as good as them I have read many reviews that aren't good but don't understand why because according to my research it is made in Turkey in the same factory and materials as Bridgestone tyres and they are half the price of it.
May 19, 2016
Given 36% while driving a Audi A6 3.0 TDI Quattro (245/40 R18) on a combination of roads for 20 average miles
I have driven the car for 5 years on what the trade called budget / hoon tyres but they have had fantastic grip and never screeched or felt any loss of grip even at speed on hair pin bends. These are my third set of tyres and the trade recommended these tyres and I have always felt confident heading into a bend in the Quattro until these tyres were fitted. My previous tyres had 230mm of contract with the road, the phenoma only 200mm of contact. Simple physics and crap design. The feedback in the Audi Quattro is now comparable to my RAV4.
April 5, 2016
Given 34% while driving a Mazda 6 Series (225/45 R18) on a combination of roads for 31,000 spirited miles
The worst summer tire I have ever put on any of my cars. It is very noisy, feels very soft and unstable in hot conditions with poor grip on turns, feels like you have a flat tire. It performs better in rainy cold days, but still quite noisy.
November 30, 2015
Given 91% while driving a Audi S3 (225/40 R18 W) on a combination of roads for 60,000 spirited miles
It was good in dry & wet when running the mountain road
January 5, 2015
Given 77% while driving a Vauxhall Astra 2.0 cdti vx line (235/45 R18 V) on a combination of roads for 15,000 spirited miles
I reviewed these in 2012 on my Astra SRI diesel 160 and they lasted two years including a winter in the snow (they were surprisingly grippy for summer types). No issues at all in any way.
I have just purchased them again and will continue to do so until something better comes along in the same price bracket.
They are hard to beat in this price range in my opinion.
October 27, 2014
Vauxhall Insignia CDTI 160 (245/45 R18 W) on a combination of roads for 2,000 average miles
I'm afraid I have to disagree with the other reviewers, I had a pair of these fitted to the rear of my car and the handling has deteriorated dramatically. The most worrying aspect is the car now drifts to the nearside meaning the steering wheel is not centred when driving straight ahead. I have returned to the fitting centre on a number of occasions, but having checked the 4-wheel alignment is all within spec they have now washed their hands of any problem, Savoy Tyres in Hull if you were wondering. Interestingly, another (more knowledgeable) tyre fitting centre, that I have approached on the suggestion of the Vauxhall main dealer, has advised the replacement of the Lassa's saying there are better equivalent brands on the market...this may possibly be 'sale-speak' but if ditching the Lassa's returns the handling I was used to before having them fitted it may well be worthwhile.





October 15, 2014
Given 70% while driving a MG ZT 135 CDTi (225/45 R17) on a combination of roads for 3,000 average miles
Put two of these on rear of my MGZT to replace Kumho K39's. Very pleased with them so far and will now put another two on the front. Excellent value and quality at an outstanding price
May 26, 2014
Given 72% while driving a SEAT Leon FR tdi (225/45 R17 W) on mostly country roads for 500 spirited miles
Just had these tyres fitted to a 200bhp 332lb/ft fwd car

Only got initial findings

Price - £160 fitted for 2 225/45/17 tyres in W speed rating which is about £20 cheaper than Kumho's / Falkens / Toyo's (was a bit strapped for cash at the time so took the gamble)

Dry Grip is phenomenal, better on the limit than my old Kumho KU31's which themselves were a very good grippy tyre! The kumho's squeelee when on the very limit but so far the lassa's don't seem to do this and grip rather well

Noise and Ride is like any other XL rated tyre really, a bit noiser and harsher than a non XL tyre but nothing really too different to the old Kumho's

Wet grip is average, tyre has very similar charachteristics as a Toyo T1R for anyone who's had them, awesome in the dry and average in the wet. Wet grip isn't as good as the previous Kumho's but it is certainly not dangerous in anyway, has plenty of grip for road use.

Longevity - No idea! But hopefully outlast the old Kumho's and Toyo's i've had (7k miles each) but then i do have a heavy right foot

So general summing up, a more than capable tyre for the price, i wouldn't class these as budget ditchfinders thats for sure. Good tyre thats safe in the wet and very good in the dry, a good summer tyre and if they last i'll definately buy again at the price


July 23, 2013
Given 86% while driving a Subaru Impreza WRX STI (245/45 R17) on a combination of roads for 10 spirited miles
Good value for money tyres, excellent wear rate over 10,000 miles, can slide a little when cold but not to bad, ok in snow and ice to, would buy them again.
June 7, 2013
Given 96% while driving a Audi A6 2.5 TDI Quattro (205/55 R16 W) on a combination of roads for 500 spirited miles
good tires, I bought directly from Brisa Turkey at a price of 79 Euro about 68 GBP. I drove on the highway about 500 miles and the first impression is very good, franeza in good condition wet, dry, very quiet, stable cornering. Tires are 205/55R16 94W XL PHENOMA SILICA, INSIDE/OUTSIDE and PLIES : SIDEWALL 2 POLYESTER - TREAD: 2 STEEL + 1 POLYESTER + 2 NYLON. Will keep posted! From Germany.
May 22, 2013
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