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Nexen CP661 View Gallery (1)
175-235/50-70 R13-17 21 sizes 2007

Nexen CP661

The Nexen CP661 is a Touring Summer tyre designed to be fitted to Passenger Cars.

5.9
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
77%
Wet Grip
71%
Road Feedback
69%
Handling
72%
Wear
80%
Comfort
76%
Buy again
71%
10 Reviews
74% Average
151,433 miles driven
Nexen CP661

Nexen CP661

Summer Mid-Range
BETA
5.9 / 10
Based on User Reviews · Limited Confidence · Updated 30 Jan 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: 10
Avg Rating: 73.7%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 1.79
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 1.8 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 8 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 0.1 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
All Tests

Sorry, we don't currently have any magazine tyre tests for the Nexen CP661

Size Fuel Wet Noise
15 inch
195/65R15 91 H C C 70
195/65R15 91 H C C 70
16 inch
215/60R16 95 H C C 70
215/60R16 95 H C C 70
17 inch
225/50R17 94 V C C 70
225/50R17 94 V C C 70
View All Sizes and EU Label Scores for the Nexen CP661 >>

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Top 3 Nexen CP661 Reviews

Renault Clio 1.4 16v (185/60 R15 H) on a combination of roads for 10,000 average miles
I often spend too much time researching my new purchases and analysing their worth, but I found these by accident!
bought a second hand clio and these were on the front, that was last summer and they weren't new. Drove it over the warm, then wet and somewhat cold winter we have just had and have no complaints! I drive so dual carriageway some town/CITY and some often bad country roads. I have found them very good grip wise, not loud enough to be anything to write about, and have yet to get them to wheelspin when I tried quite hard! Car had a fault with tc light so we were testing to see if it was on or off but after a short drive, no wheelspin could be done and tc working well. On my car they have been amazing and good value, tried many other well known brands and have bought my second set of these as they did so well! They are also called roadstone with the same CP661 I have heard. Just named in Europe differently... to uk I think..
Ask a question | Helpful 553
May 4, 2016
Given 83% while driving a Toyota Wish (195/65 R15) on a combination of roads for 8,000 easy going miles
Had these tyres on for 18 months now. Couldn't be happier with them. Value for money is outstanding. A great all round tyre for the mum bus. Wet performance is more than acceptable, I feel confident on the open road & around town no matter the conditions. No road noise to speak off either & wear rate is very good.
If you're looking for a cheaper tyre then defiantly put these on your short list.
June 20, 2016
Given 73% while driving a Toyota Wish (195/65 R15) on a combination of roads for 2,200 average miles
These tyres came on the Mrs new (to us) mum bus. I'm always a bit sceptic about cheap tyres but the Koreans seem know how to do them right.
Grip in the dry & wet is more than acceptable (I have F1 Asy2 on my own car). I've driven the car of a mixture of roads surfaces & conditions (smooth seal, course chip, dry, very wet etc) & they've never given me any feeling they were going to let go. Very good value for money, I'd use these again any day over the likes of Bridgestone ER300 etc.
After 3500km they're not showing any signs of wear so I expect they'll be on there for at least 50K km.
April 27, 2015
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Latest Nexen CP661 Reviews

Given 61% while driving a Kia Motors (195/65 R15) on mostly town for 24,233 easy going miles
Had to be replaced on our family car at 39000 kms - a lot earlier than others have wrote despite our conservative driving methods.
June 18, 2015
Given 87% while driving a Kia Motors (225/70 R16 T) on a combination of roads for 19,000 average miles
Having tried different premium tyres and now on a reduced budget, I decided to try these on all four wheels. All I can say is they outshone the rest in all areas, especially wear. The grip was excellent, even in the wet and they were more comfortable than all the others and no noisier than most. The premium brands were averaging 11000 miles on my "tank" and I have just changed the front Nexen tyres after 19000 miles! These are a quality tyre for a budget price and I will always use them in the future, cannot recommend them enough
September 16, 2014
Check out how the BEST all seasons tyres perform against premium summer and winter tyres!
Given 75% while driving a Kia Motors (205/55 R16 V) on a combination of roads for 2,000 average miles
Nexen CP661 tyres are pretty good if you need a V speed-rating. These were already fitted onto a Kia Ceed front-wheel-drive hatchback, and they track straight at motorway/autostrada speeds; the vehicle path is not too bothered by broken surfaces or painted lines; they steer around corners quite well; they don't lose traction during acceleration nor grip during braking under normal conditions. They are also fairly quiet, ranging from silence on new tarmac to informative rumbling on other surfaces; other big-name brands of rubber have been much noisier and less grippy than these Chinese-made Nexens.

Having driven this car with Nexen CP661 tyres on hot tarmac and concrete; cooler, wet roads; and a few stretches of dry gravel road, I know I can proceed with confidence around town; up and down twisty hill roads; across country at moderate speeds and fast on the motorway. The tread and rubber seem to be optimized for spring, summer and autumn weather, so you would need to change to something else for winter snow, frost and/or offroad mud.
July 13, 2014
Given 77% while driving a Citroën C3 (185/60 R15 H) on a combination of roads for 10,000 spirited miles
Better dry grip than the yokohama A Drive and similar to Goodyear Eagle NCT5. Comfortable and honest tire.
June 17, 2014