Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
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Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| Tire Rack owners | – | 89 |
| Tyre Reviews owners | 85 | 80 |
| SimpleTire owners | – | 94 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| Tire Rack owners | – | 79 |
| Tyre Reviews owners | 75 | 63 |
| SimpleTire owners | – | 84 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| SimpleTire owners | – | 68 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| Tire Rack owners | – | 87 |
| Tyre Reviews owners | 70 | 68 |
| SimpleTire owners | – | 93 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| SimpleTire owners | – | 88 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| Tire Rack owners | – | 86 |
| Tyre Reviews owners | 35 | 73 |
| SimpleTire owners | – | 89 |
| Source | Azenis RT-615K | NT555 G2 |
|---|---|---|
| Tyre Reviews owners | 90 | 78 |
| Category | Falken Azenis RT-615K | Nitto NT555 G2 |
|---|---|---|
| Relative Score | 79 | 84 |
| Dry | 95 | 92 |
| Wet | 79 | 82 |
| Snow | 67 | 67 |
| Comfort | 82 | 90 |
| Noise | 77 | 88 |
| Treadwear | 69 | 87 |
| Handling | 90 | 78 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Tire A
Tire B
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
The Falken Azenis RT 615 K is widely regarded as a high-performance, cost-effective 200TW tire that excels in dry track and street conditions. While users praise its exceptional grip and predictable handling, it is noted for requiring heat to reach optimal performance and having a limited lifespan, particularly when subjected to aggressive driving or aging.
The Nitto NT555 G2 is widely regarded as a value-oriented ultra-high-performance summer tire that excels in aesthetics, dry-road handling, and longevity for the price. While many users praise its stability and aggressive look, consensus is divided regarding its traction limits, with high-horsepower vehicle owners frequently reporting difficulty with straight-line hook-up and wet-weather confidence.
From Reddit, forums and review threads. Not part of our score
We haven't collected enough community discussion about this tire yet.
Community opinions on the Nitto NT555 G2 are mixed, often positioning it as an affordable, good-looking tire with decent tread life that performs adequately in warm weather. However, many enthusiast drivers note that it struggles significantly with straight-line traction, wet weather grip, and cold temperatures compared to higher-end alternatives like the Michelin Pilot Sport 4S.
“Finally slapped on the widened steelies with 285/40/17 Nittos NT555 G2.”
“I have the nittos NT555 G2s on my mustang and they have lasted about 30k miles. But I wouldn't call them ultra high performance by any stretch of the word. I put firestone firehawk indy 500s, 305s on all 4 corners of my widebody scatpack and think it's a far superior tire in terms of grip, style and rain grooves for wet traction.”
“Staggered tire recommendations? Title. I have 17x9 rims up front and 17x10.5 rims in the rear. Currently running 245/45R17 on the front and 275/40R17 in the rear. Ideally I’d like to keep these tire sizes. Tires all around are Nitto NT555 G2 tires, and I’m just not happy at all with the grip. They’re fine around corners, but if I even breathe on the throttle at all in 1st gear, I’m instantly spinning. It’s sketchy as fuck in the rain, too. I wanted Continental DWS06 tires, but they don’t make those in a 275/40R17 for my rear tires. I’d only be able to get the fronts. Thinking about Michelin Pilot Sport A/S 4s, but not sure. I want to be able to handle well enough around corners, handle Ohio weather no matter what it’s doing, and I wanna be able to floor it in 1st gear and get very little wheel spin. Obviously not trying to drive the car in snow, it’s still mostly gonna see nice weather and occasional rain, I usually like to store the car over the winter and drive something else. But still, Ohio is Ohio, and our weather can absolutely never make up its damn mind. So, I come asking for tire recommendations. Don’t really mind price all too much, but my car is completely stock engine wise minus the exhaust, so it’s not like I’m pushing crazy power. I “daily” this car whenever the weather is nice, so I just need a streetable all season tire that won’t lose grip instantly whenever I try having a little fun. Thanks!”
“How to make the most of my nt555 g2s? Hey, I have 285 front 305 rear 20" 555 g2s on my Camaro 1LE and I'm really struggling at autocross. I find that my braking ability and front grip mid corner are aweful. I drove a friend's car on Better 200tw tire and loved out. How can I make the most of my G2? I ran 28psi last event. I'm not trying to win a class, just learning what I can. I plan on upgrading tires after I burn these but I don't want to drop 1400 on good tires until I need to since my car is not only used at Autocross. It's drag raced, autoXd, going to go to a road course, and I want to go to Canada and the tail of the Dragon lol. Yes, I know wheels/tires for the street and track Seperate would be the best idea Read more”
Based on 24 community posts
| Attribute | A · Falken Azenis RT-615K | B · Nitto NT555 G2 |
|---|---|---|
| Category | — | Summer Trackday and Competition tires |
| Vehicle type | — | Passenger Car / Crossover |
| Sizes available | 17 | 64 |
| Rim diameters | 14″ – 18″ | 17″ – 22″ |
| Tread depth | 8/32″ | 10.2/32″ |
| UTQG | 200 A A | 320 A A |
| Sidewall | Blackwall | Blackwall |
| Max pressure | 51 psi | 50 psi |
Falken
Nitto
Winner: Nitto NT555 G2 — better treadwear, noise and comfort. Pick the Falken Azenis RT-615K if handling and dry matter most to you.
Nitto NT555 G2 scores 87 vs 69 on treadwear.
Falken Azenis RT-615K scores 90 vs 78 on handling.
Nitto NT555 G2 scores 88 vs 77 on noise.
Nitto NT555 G2 scores 90 vs 82 on comfort.
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.
