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Falken Azenis RT660

Falken's new rigid carcass construction enhances steering response and vehicle stability, while the motorsports-inspired tread compound provides unmatched grip for those who prioritize peak performance above all else. The track-ready RT660 is DOT-approved, saving drivers the hassle of swapping tires before each track day. Designed to heighten the connection between road and driver, and available in a wider range of fitments than its predecessor, the Falken AZENIS RT660 invites more enthusiasts to experience the difference.

8.1
Tyre Reviews Score Based on Professional Tests
Limited Confidence View Breakdown
Dry Grip
100%
Wet Grip
58%
Road Feedback
95%
Handling
95%
Wear
73%
Comfort
40%
Buy again
100%
4 Reviews
80% Average
34,003 miles driven
1 Tests (avg: 2nd)
Falken Azenis RT660

Falken Azenis RT660

Summer Mid-Range
BETA
8.1 / 10
Based on Professional Tests · 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
Dry
88.7
1.8x / 1 test

Cross-category scores are derived metrics that combine data from multiple test disciplines to evaluate real-world performance characteristics.

Handling
88.7
1 test
Score Components
Professional Tests
Weight: 80%
Tests: 1
Publications: 1
Period: 2021
User Reviews
Weight: 15%
Reviews: 4
Avg Rating: 80%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.66
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
Data Sources
TestPublicationDateSizePositionMetrics
2021 Track Day 200TW Tyre Test Tyre Reviews 2021 225/45 R17 2/8 1 metrics
1
Tests
2nd
Average
2nd
Best
2nd
Worst
Latest Tyre Test Results
2nd/8
Excellent heat management, low wear, precise and consistent steering, extremely strong on the brakes, very enjoyable tyre to drive, very stable once heat cycled.
Not quite as fast as the BFGoodrich G Force Rival S 1.5
The Falken RS660 is a very well priced, extremely capable tyre with good grip, direct and stable handling and very impressive heat management.

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Top 3 Falken Azenis RT660 Reviews

Given 77% while driving a Mazda MX5 (225/45 R17) on track for 3,000 spirited miles
For a 200 treadwear tire the RT660s did better than I expected. Over two years and approximately six autocross schools and test and tunes along with a couple thousand road miles these tires held up well and exceeded the performance expectations I had. During fast road driving they really didn’t show any negative behaviors, they just stuck. While not my first choice for driving in the rain, the few times they were driven in the rain they really handled it OK. The only downside that I noticed is that anytime you run over a painted stripe on the road or a slick piece of pavement, the tire tread makes a very distinctive noise. The first time I drove on them I actually thought I left wheel nuts loose and pulled over to check torque. Just like all 200 tread wear tires, they pick up every pebble and sand you encounter in parking lots (or your gravel driveway) and throw it into your wheel liner. This is just the cost of super sticky tires, but understand that going in.
September 18, 2024
Given 87% while driving a Ford fiesta st (205/40 R17) on a combination of roads for 30,000 spirited miles
I use the tires for the complete opposite of they're intended use. I drive about 45000km's per year in my 2014 Ford Fiesta ST with now 340000km's on it and these are by far the best tires I have ever fitted to it. The grip is unbelievable in the dry, especially if you get a little bit of heat in them. You can feel the tires grab the road as you get heat in them, it's is uncanny. The wet performance is surprisingly good for a tire of this design, despite the aggressiveness of the tire it handles very well in damp/wet conditions in my opinion. However, obviously if it is really wet with standing water you will hydroplane, especially in a small light car. The wear compared to the Falken Azenis RT615 is amazing. I am on my second summer with them and still can get some more use out of them next summer, which is crazy for a 200 treadwear rating tire. Comfort, you aren't buying these tires for comfort, and my car isn't one to comment on that either.
October 11, 2022
Given 76% while driving a Volkswagen Golf MK7 GTI (225/45 R17) on track for 3 spirited miles
For 2021 I needed new tires for autocross and with the RE71R no longer available, my shopping list was pretty short; the RT660 or the Yokahama A052. Both tires have had reports of not being happy on front-wheel drive, camber limited cars like my GTI. Between the two tires my autocross contacts recommended the RT660, and I decided to gamble on them. After all my experience being on the RE71R, I was a bit nervous. The RT660s did not disappoint. Positives - Good feedback though I miss the on -center feel and stiff sidewalls of the RE71R - Grip! I was pushing through a large sweeper at full throttle. I expected to lose grip and possibly spin, only to be pleasantly surprised. Negatives - Not much given my narrow expectations. - Accelerated wear. I will not get two seasons of autocross out of these like I did the RE71Rs After about 100 runs I have zero signs of tire chunking or delamination. I am extremely careful about my tire pressures, which in my case are generally 44 front and 39-40 rear. Tire wear is high, so I will not get two seasons of use out of these tires. I did have them flipped on the wheels and I rotated front/rear, but autocross is hard on tires. I will buy the RT660s again.
October 28, 2021

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Latest Falken Azenis RT660 Reviews

Given 80% while driving a Dodge SRT4 Neon (/45 R17) on a combination of roads for 1,000 spirited miles
Stage 3 turbo w/ a mild tune. 17x7.5 SSR Comp-C wheels for a good fitment. These were bought to replace a well overdue set of Hanook RS-3 tires of the same size. I originally wanted to get their RS-4 tire, but couldn't find any in stock. After some searching, and several online reviews, I took a chance and "settled" on these Falken RT660 tires. "Settled" was the wrong thought about these tires. They are, quite frankly, amazing, but with some tradeoffs. At least in this application, they are very sensitive to setup. Alignment needs to be spot on the factory recommended specs, air pressures need to be tightly monitored (OEM is 32psi all around, but the rear end tends to oversteer at those pressures; 32psi front/28psi rear seems to be the sweet spot so far.) These characteristics are both a curse and a blessing. Once you get everything dialed in they will reward you with an insane level of grip. Lately I've pushed them pretty hard (maybe even too hard) on non-closed-course areas, and have yet to find the upper level of grip. I desperately need an event where I can explore the lofty capabilities these tires are exhibiting. In terms of noise level though, these the most "chatty" tire I've ever experienced. They "chirp" over every piece of seam sealer out there, and will frankly howl like the devil on the highway. Luckily, rolling the windows mostly up (or going faster, so wind noise drowns them out!) takes care of the problem nicely. While I ranked the "comfort" level relatively low above, I do not consider it so sufficiently evil that I regret the choice. In terms foul weather performance, this is my "toy" car, so it generally doesn't see anything other than bright and sunny days. That being said, I did get caught out by a particularly bad weather forecast, and was struck by some rather substantial rain. While I didn't drive with my usual zest, I none the less did not feel out of control in any way, at posted speeds. For fun at a traffic light I explored the levels of grip available for launching. It was more than adequate. As such I rated the wet grip just a bit above neutral. Short of being at a paid for event that receives precipitation, I won't be able to expand upon the wet weather characteristics. In terms of general wear, I didn't particularly baby these tires after initial install, but as of late have been even more spirited in their use. Visual evidence of such is not appearing yet, so they are at least handling my use quite well so far. One final note about the tires themselves. I do not know if it's the general norm for Falken's tires, but when these were mounted (and mounted properly; the shop put the yellow dot at the valve stem) 3 assemblies balanced perfectly (0 weight added) and 1 assembly has 0.25oz total weight added. I've NEVER had that happen before, so well done to Falken for that. Overall, I am extremely pleased with my purchase and would highly recommend them.
August 5, 2021
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