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Achilles 123S

The Achilles 123S is a Trackday and Competition Summer tyre designed to be fitted to Passenger Cars.

6.7
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
91%
Wet Grip
64%
Road Feedback
81%
Handling
82%
Wear
58%
Comfort
57%
Buy again
70%
13 Reviews
72% Average
63,200 miles driven
Achilles 123S

Achilles 123S

Summer Economy
BETA
6.7 / 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: 13
Avg Rating: 71.7%
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

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Top 3 Achilles 123S Reviews

Given 80% while driving a Ford Fiesta mk7 (195/50 R15) on track for 500 spirited miles
The dry grip is great. The handling is very good and stiff, while the comfort is not bad. I recommend them for the track up to 10 degrees C - they start to melt during warmer days after few laps.
October 24, 2022
Given 59% while driving a Honda Fit (Jazz) (195/50 R15) on a combination of roads for 7,500 spirited miles
The first thing i bought this tyre its because the price is literally CHEAP! and its a SEMI SLICK, using it for daily driven Honda Fit, but the tyre is not long lasted and its little bit noisy if you still using a "stock exhaust"
August 25, 2020
Given 53% while driving a Subaru Impreza WRX STI (235/40 R18) on a combination of roads for 4,000 spirited miles
They're great on the dry with a lot of grip, but they're terrible on the wet. Aquaplaning is quite dangerous. They're cheap compare to other semi slicks (200 tread wear). Changed these tyres because they're cracking and split sidewall after 3 years, even though had travelled less than 10,000. Sidewall literally crumbles like parmesan. They're good if you used them for track day car and use them up very quickly for a couple laps until they're bald, but do not buy them for your everyday car because they will not last long (mileage or age of the tyres).
September 19, 2020

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Latest Achilles 123S Reviews

Given 71% while driving a Suzuki Swift 1.5 (195/50 R15) on a combination of roads for 1,000 spirited miles
Been using it for a while, good choice for low budget, amazing dry grip but really slippery on wet track (i have to lower the pressure to maintain optimal grip on wet surface), worn out easily(a bit softer compund maybe?), bit noisy(a lot less noise than the predecessor 123), but overall its good because of the value for money, would buy again, shred your tyre not your wallet
April 12, 2017
Given 73% while driving a Renault Megane RS250 CUP (235/40 R18) on a combination of roads for 8,000 spirited miles
Great tyre but noisy
Only lasted 13000km of spirited driving
Cheap alternative to tires like
1. PS3
2. Assy 2
3. CSC 4
June 24, 2016
Given 74% while driving a Renault Clio 182 (205/40 R17 W) on mostly motorways for 10,000 average miles
Used three sets of 123s driving on mountain road and highway.
Good dry grip sustained until no tread depth,compared to
AD08 it's less stable during intense driving.
And the wear of tires are seriously may be related to the soft rubber.
It is still a good choice in economy.
January 10, 2016
Given 63% while driving a Nissan (265/35 R18 W) on a combination of roads for 10,000 spirited miles
Not sure if the compound has changed on these but back in 2012 I used to struggle to get wheel spin in a 300 rwhp Nissan S15 using 235/40/18 or 265s. A possible newer compound tends to feel greasier but still providing good grip when slightly warm to optimal temps. Even on mild days I would start to get wheelspin I would launch from the wheelspin even faster, but not anymore.

Since late 2013 and now on 340 rwhp, it's not the same, even if I lower the acceleration. I used to be able to plant it and rear would barely squirm, make the "screech-ech-ech" launch noise and rocket off.

Due to the wear rate on the rear, I am using the Achilles ATR Sport V2 for street. Not a bad tyre but around 20% less grip when warm than the 123S currently, less noise (123S are quiet until they heat cycle too many times), cost 30% less and coping well with some spirited squirts.

I'll be trying either the Dunlop Direzza Z2 Star Spec, Yokohama AD08R or the Hankook Ventus RS3 Z222 next.

It's always good to try new tyres and test their technology. I still think the best overall tyres I've ever used for sprited street is the Toyo Proxes T1R but not a cheap tyre and prboably due for a refresh rubber technology soon anyway (T2R?). Yet to try the competition's range to confirm though.

July 1, 2015
Given 89% while driving a Subaru sti Type RA (255/35 R18 W) on mostly country roads for 10,000 spirited miles
Love these tyres got them fitted to my impreza turbo very sticky, not really drove hard on wet surface but dry omg.
May 29, 2015
Given 69% while driving a Renault Megane RS250 CUP (255/40 R18 W) on a combination of roads for 6,000 spirited miles
Cant get use to it, nice tread pattern though. Rear Only
April 23, 2015
Given 84% while driving a Hyundai Veloster Turbo 1.6 TGDi (235/45 R17 V) on a combination of roads for 1,000 spirited miles
Good grip even in wet. Great on dry.
If u're looking for a set of grippy sticky semi slicks and have a budget to meet, these are great. However they are noisy and due to higher rolling resistance, does consume more fuel.
April 16, 2014
Given 59% while driving a Honda Jazz (225/45 R17) on mostly town for 5,000 average miles
not recomended for daily use. wear: suck as hell. because its semi slick. noisy after goes 40km/h only can use it under 6 months. affordable prices if u going racetrack/drag budget tire than other brands.not recomended use wet condition as it will slip.
January 25, 2014
Given 90% while driving a Volkswagen Scirocco 1,4 TSI 160hp (235/40 R18 W) on a combination of roads for 0 average miles
Recently bought it & travelled 500KM on it. I do admit it will take another 500KM to fully see its potential but so far, grip on both dry & wet is awesome. It is semi slick, usable on both track & daily driving. There is a whizzing sound when you break during mid-high speeds due to its aggressive grooves. The tyres looks really aggressive by the way. Price wise, certainly way much cheaper than the usual brands. Would certainly recommend it & will purchase it again.
January 1, 2014
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