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Accelera Iota ST68

The Accelera Iota ST68 is a Touring Summer tyre designed to be fitted to SUV and 4x4s.

7.1
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
85%
Wet Grip
77%
Road Feedback
71%
Handling
70%
Wear
74%
Comfort
76%
Buy again
71%
21 Reviews
75% Average
177,335 miles driven
Accelera Iota ST68

Accelera Iota ST68

Summer Budget
BETA
7.1 / 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: 21
Avg Rating: 74.9%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.12
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 Accelera Iota ST68

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Questions and Answers for the Accelera Iota ST68

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November 26, 2023

Are Accelera Iota ST68 is good for EV ??

We've seen no rolling resistance data for the Accelera Iota ST68 so can't tell you about its energy use, however its wet grip will be lower than a premium tyre.
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Review Summary

Based on 20 user reviews

Overall, drivers report the Accelera Iota ST68 delivers strong value for money, with many high-scoring reviews praising its quiet, comfortable ride and confident dry/wet grip for a budget SUV tyre. Several users also report surprisingly decent tread life for the price, including on heavier vehicles and towing, and many say they would buy it again. The main recurring downside is a notable subset of users experiencing high-speed vibration/balancing issues (sometimes described as out-of-round), which can significantly degrade motorway refinement and drive quality.

Strengths
  • Excellent value/low purchase price versus premium brands
  • Quiet and comfortable ride (especially for the price)
  • Good grip/road holding in dry and wet conditions
  • Stable handling on suvs (including towing/heavy vehicles)
  • Generally respectable tread life reported by many owners
Areas for Improvement
  • High-speed vibration/shaking and difficulty balancing (possible out-of-round tyres)
  • Especially noticeable above ~50-70 mph

Top 3 Accelera Iota ST68 Reviews

Given 50% while driving a Audi Q5 (255/45 R20) on for 0 miles
Like what others have said these tyres cause some odd vibrations at 60+ I’ve even had them road force balanced which helped a bit but due to the high road force you can still feel it.

Would not recommend them.
September 8, 2024
Given 83% while driving a BMW X5 (325/30 R21) on mostly country roads for 10,000 spirited miles
Surprised at the quality of these cheap tires. Bought other cheap tires for other cars and generally you get what you pay for but these are good but they don't last long
September 11, 2024
Mitsubishi Outlander (225/55 R18) on mostly town for 15 easy going miles
As others have stated, vibrate at about 65 - 70 mph. Had them balanced twice but can't stop the vibration.
September 12, 2025

How would you rate the Accelera Iota ST68?

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Latest Accelera Iota ST68 Reviews

Initial Impressions Review
Given 97% while driving a BMW X6 M (315/30 R22) on for 2,000 miles
I fitted a set of four these on My BMW X6 30d
22 inch Wheels
Although I've given them all 10 star ratings the most important thing I've got to say is they work just fine. I don't race my car around a track where I live there's quite a bit of traffic which I generally just go with the flow. If it's raining heavily I adjust my driving accordingly again I'm not racing about. Very initially I thought the ride was a tiny bit harder but I just let a little bit of air out of each one and I can't honestly say they feel any different from the original continentals
Here is the rub.
Accelera Iota ST 68 £470 a set of four
Premium brands all around £1400 for a set of four.
Can't comment on longevity at the moment but I could have three sets of these for a set of premiums!
February 23, 2026
Initial Impressions Review
Given 60% while driving a 2019 Hyundai Santa Fe 2.2CRDI (235/55 R19) on for 12,000 miles
Very good silent and comfortable tires with pretty good grip on the first 5.000-8.000km. Started becoming very noisy after 10.000km and almost completely bald at 20.000km. Not recommended to use for heavy rain, these tires have a hobby of aquaplaning, braking distance also increase by quite a lot when using these tires. Probably one of the cheapest tires I can get for the size (second to the GT Champiros which are way worse with the body roll, no grip and very loud). Considering the price and wear of the tire, seems quite expensive, changed to the Goodyear Assurance Max SUVs which are much better in almost every aspect except the comfort level of the Iota is still unbeatable at its' price point. The goodyears are 12% more pricey but lasted more than 50.000kms turning out to be cheaper, and doesn't get louder with more wear.
February 1, 2026
Given 68% while driving a Lexus RX350 (265/50 R20) on mostly town for 10,000 easy going miles
Quiet and comfort at slow speed, but vibrates like hell when cruising at 60 mph. Ride feels plush and quiet on my Lexus RX350. For this price, I can't complain.
May 20, 2024
Given 84% while driving a Ford Edge Sport (225/45 R20) on a combination of roads for 20 spirited miles
We bought a Ford Edge in 2020 and it had a brand new pair of these fitted on the front. I’d never heard of the brand and I was a bit sceptical.
But 3 1/2 years later we have covered 21,000 miles and the edges are just going off, I think they have worn very well on the front of a 2.2 ton car and a good 8k of the miles had been towing a large caravan.
They have performed well in all weathers and the car has been driven quite ‘spiritedly’ at times.
I have just ordered a new set of 4, so if I can get another 3/4 years and 20+ thousand miles out of them I will be very happy.
March 25, 2024
Given 84% while driving a Nissan Qashqai (215/55 R18) on a combination of roads for 18,000 average miles
I have had these tyres on my car for 3 years,covering almost 18,000 miles. The rears are practically still new the fronts have about 3 mm left on them.
Living and driving in central Scotland we have a lot of rain, and these tyres have never let me down in some challenging conditions including snow.
Just starting to feel the front not as grippy as they have been. I will be looking to replace them within the next 1000/2000 miles,i can honestly say these tyres haven't let me down in Dry and Wet.
January 27, 2024
Given 50% while driving a Toyota 2006 Avalon (265/55 R19) on for 2,000 average miles
Bought a Land Cruiser with a brand new set of these fitted at low speeds all is fine but get above 50mph and it’s a different vehicle. I have been into the garage three times to have them rebalanced as the vibration is horrendous. The conclusion is that the tyres are ‘out of round’ therefore faulty and will need changing. Getting vibration through the seat and the steering. After reading some of the reviews about these tyres on here and the conflict of opinions between them and mine I can only assume I got mine from a faulty batch. I would not recommend them for premium vehicles. Buy cheap buy twice! And now the garage will have to replace them.
September 14, 2023
Given 50% while driving a Toyota 2006 Avalon (265/55 R19) on for 2,000 average miles
Bought a Land Cruiser with a brand new set of these fitted at low speeds all is fine but get above 50mph and it’s a different vehicle. I have been into the garage three times to have them rebalanced as the vibration is horrendous. The conclusion is that the tyres are ‘out of round’ therefore faulty and will need changing. Getting vibration through the seat and the steering. After reading some of the reviews about these tyres on here and the conflict of opinions between them and mine I can only assume I got mine from a faulty batch. I would not recommend them for premium vehicles. Buy cheap buy twice! And now the garage will have to replace them.
September 11, 2023
Given 56% while driving a Audi A8 (265/40 R20) on a combination of roads for 2,000 average miles
Bought an Audi A8 with these on, tyres were brand new and totally ruined the car, hard ride, felt everything though suspension, howled at 50mph or above but worst of all could not get them to balance despite two attempts, vibration was terrible. Replaced them with Goodyear asymmetric 3 and completely transformed the car.
May 15, 2023
Given 81% while driving a Mercedes Benz GLE 250d 4Matic (255/55 R18) on mostly motorways for 6,300 average miles
Good road holding in the dry, much better than the scary pirelli scorpion in the wet condition, doesn’t aqua planned as much as the pirelli scorpion that came with the car. Have only driven for 10,000km so let’s see how long it would last, i’d be happy if it last 40,000km but the compound seems way softer compare to the scary pirelli scorpion.
March 14, 2023
Given 82% while driving a Vauxhall Vauxhall Grandland X Elite Nav 1.5 TurboD (235/50 R19) on a combination of roads for 1,000 average miles
The Accelera IOTA ST-68 replace my original ones from factory Continental ContiSportContact 5 lasted 25000 miles & 3 and half years, good tyre but a bit noisy and £40 a corner more expensive. I only done 1000 miles and so far, makes the car drive smother and quieter rated A-68db C+C 103 V XL. I will come back later after I done a bit more mileage, these Accelera IOTA ST-68 have a new pattern. I already driven in heavy rain and their stud very well I was impressed, so far 4 stars
October 1, 2022
Given 84% while driving a Land Rover Range Rover Vogue SDV6 (275/40 R22) on mostly motorways for 20,000 spirited miles
Positively surprised by the overall performance of these Tyres. Budget priced but quiet and cannot fault the grip in the dry and especially in the wet which is where I thought they would be susceptible. Fitted to a Range Rover they have now done over 20,000 miles and still have a good few thousand miles left in them. I had just bought the Car and after considerable expense in the initial Car purchase put these Tyres on with the intention of upgrading them to a set of the well known brands later on when finances permitted. I honestly can't fault them and shocked at how well they are performing to the extent that I will be replacing them with the same when they eventually wear out. I drive around 25K miles a year and have done for over 40 years and these tyres are as good as any I have experienced in fact even better than some of the more popular German, Italian and French brands which are literally double the price and then some. In the past I have bought some budget tyres and instantly regretted it realising it was a false economy but these Accelera ST's have totally surpassed my expectations.
July 16, 2022
Given 84% while driving a Audi Q5 (255/45 R20) on mostly country roads for 20,000 average miles
In October 2019 I needed to change all 4 tyres on my Audi Q5. I took into consideration that I was going to be driving on a long holiday to Italy in June 2020, so I did some research and tried to get the best set of low cost tyres to last me until June when I would change to more premium ones. Well Covid 19, appeared my holiday was cancelled and it’s now January 2022, some 2 years and 4 months later. I never did buy those premium tyres. I still have some tread on all the Accelera Iota st68 tyres but because an idiot driving at speed two months ago forced me to hit a kerb at about 25mph I badly damaged the edge of one tyre and two have inner wear. I only noticed when I recently washed my car. I have decided to change all 4 and guess what I’ve bought another set of Accelera Iota ST68. 4 tyres plus fitting and disposal of the old ones has cost me £441 that’s £110 pound a corner. I’ve done over 20000 miles on the old ones so I cannot complain and I have no complaints.
January 25, 2022
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