Falken Azenis RT615K+ Extreme Performance Summer Tires in 215/40R17

Extreme Performance Summer
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  • FalkenAzenis RT615K+
  • FalkenAzenis RT615K+
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$ 184.00 Per Tire

Set of 4: $736.00

  • Size: 215/40R17
  • Style: Blackwall
  • Eco Focus: N/A
  • Load Range: RF Load Range
Free Road Hazard Protection$72.24 value. Two-year coverage.
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Options Per Tire Total
Heat Cycling $25.00 $100.00
Set of 4: $ 736.00

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Falken Azenis RT615K+The Azenis RT615K+ is a further evolution of Falken Tire's championship-winning Extreme Performance Summer tire, the Azenis RT615K. Developed for drivers of muscle cars, sports cars, street rods and performance sedans who want ultimate grip in warm, dry and wet conditions, the Azenis RT615K+ is not intended to be serviced, stored nor driven in near- or below-freezing temperatures, through snow or on ice.

Utilizing the proven internal construction and motorsports-inspired asymmetric tread pattern as its predecessor, the Azenis RT615K+ features Falken's latest Extreme Summer Performance-targeted compound. The updated compound is designed to further satisfy the increased performance expectations of competitive drivers through additional dry grip. The Massive Sport Side Shoulder Blocks deliver extreme levels of lateral traction through turns, and the solid center rib effectively puts the power to the ground by providing constant contact with the road. Inboard circumferential grooves and notched tread blocks help evacuate water from the contact patch, improving wet traction and hydroplaning resistance.

Internal construction of the Azenis RT615K+ includes a high-tension casing to help increase handling response and high-speed stability. Twin, high-tensile steel belts are reinforced by a spirally-wrapped nylon Joint-less Cap Ply to promote even wear and durability.

Extreme Performance Summer tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they are flexed in any manner, such as by adjusting inflation pressures, mounting them on wheels, or using them to support, roll or drive a vehicle.

Note: Flexing of the specialized rubber compounds used in Extreme Performance Summer tires during cold-weather use can result in irreversible compound cracking. While compound cracking is not a warrantable condition because it occurs as the result of improper use or storage, tires exhibiting compound cracking must be replaced.

Tire Rack Test Results Falken Azenis RT615K+

Confirming Optimal Track Tire Pressures: 14 Extreme Performance & Competition Tires Tested on a BMW M2(05:55)

One of the most frequently asked questions among enthusiast drivers is, “What tire pressure should I run for optimal performance?” This test sets out to answer it! 14 popular Extreme Performance and Competition ran their skidpad laps on our M2, and the full spectrum from 26 to 42 psi was tested. So, want to learn what we learned? Watch now!



Read the Full Test Report

Ratings Charts & Reviews Falken Azenis RT615K+

Tire Category: Extreme Performance Summer

Consumer Surveys

 
Compare
Best in Category
Price
Miles Reported
Recommended
Treadwear
Falken Azenis RT615K+
Good
97%
$184
1.4M
8.5 - Good
7.1 - Good
6.9 Hydroplaning Resistance
7.3 Wet Traction
9.1 - Excellent
9.1 Corner Stability
9.2 Dry Traction
9.1 Steering Response
N/A
N/A Light Snow Traction
N/A Deep Snow Traction
N/A Ice Traction
7.8 - Good
7.9 Ride Quality
7.8 Noise
7.2 - Good

Falken Azenis RT615K+ Reviews

Customers say the tire delivers exceptional dry traction and precise handling, excelling in autocross and track environments with predictable grip and responsive steering. Wet performance is manageable in light rain but requires caution in heavy downpours due to hydroplaning risks, especially as tread wears. Treadwear is praised for a 200TW tire, offering respectable longevity through multiple heat cycles, though aggressive use accelerates wear. Ideal for drivers prioritizing track-ready performance and durability over all-weather versatility.

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Customers Like:

205 reviews mention "Wet Traction"

  • 150 positive
  • 55 negative

Reviewers scoring 7s-8s praise the RT615K+ for predictable wet handling and secure grip in light rain, with some noting surprising traction during wet autocross. While heavy rain or standing water can challenge limits, many find them manageable when new, offering controlled performance ideal for summer use. Wear reduces wet efficacy, aligning with extreme performance expectations.

April 30, 2025
(Verified Purchase)
3.7 out of 5 Star Rating
3.7 out of 5

...They're good in the rain...

These are excellent tires. I drive all year round and appreciate that they don’t need much heat to grip. They’re good in the rain. They’re sticky in the dry. The sidewall is not crazy stiff so they’re comfortable enough. There are better track only tires, and there are more expensive sticky street tires, but there are not better tires like these for the price.

Vehicle: 1997 Acura NSX
Miles Driven on Tires: 500
Driving Conditions: Combined Highway/City
Location: PORTLAND, OR
Driving Style: Spirited

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February 20, 2024
(Verified Purchase)
3.9 out of 5 Star Rating
3.9 out of 5

...Not one complain wet or dry...

Great performance tires. Not one complain wet or dry. I live in Miami where we get plenty of both.
Only complain is that they don't last if you are going to daily them. Then again, I drive like a maniac, so I've been told.
Save them for autocross and they'll last longer. :D

Vehicle: 2020 MINI John Cooper Works Hardtop 2 Door
Miles Driven on Tires: 10,000
Driving Conditions: Combined Highway/City
Location: MIAMI, FL
Driving Style: Spirited

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296 reviews mention "Dry Traction"

  • 291 positive
  • 5 negative

Customers praise the Falken Azenis RT615K+ for outstanding dry traction, with many scoring 9-10. Reviewers highlight exceptional grip, precise cornering, and predictable handling, making them ideal for autocross, track days, and spirited driving. The tires heat up quickly, offering consistent performance, though some note accelerated wear typical of extreme performance summer tires.

September 25, 2025
(Verified Purchase)
3.9 out of 5 Star Rating
3.9 out of 5

...Dry grip and traction are great, they are stable and predictable to the edge of grip.

Very happy with the Falkens, I drive the backroads/touge often and these hold up well. Dry grip and traction are great, they are stable and predictable to the edge of grip.

Vehicle: 2004 Mazda RX-8 6-speed
Miles Driven on Tires: 400
Driving Conditions: All Highway
Location: DOVER, TN
Driving Style: Spirited

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249 reviews mention "Treadwear"

  • 174 positive
  • 75 negative

The Falken Azenis RT615K+ receives strong praise for treadwear, with many users scoring 9s-10s commending its durability through multiple track days, autocross events, and heat cycles. Reviewers highlight consistent grip and predictable wear even under aggressive use, noting it outperforms expectations for a 200TW tire. Enthusiasts appreciate its balance of longevity and extreme dry performance, solidifying its role as a reliable choice for high-performance summer driving.

May 09, 2026
(Verified Purchase)
4.3 out of 5 Star Rating
4.3 out of 5

...With 200 treadwear rating I really only expected to get one summer out of my first set. I ended up getting four summers...

My Forester is on coilovers and has almost all STi aftermarket suspension parts. This is my second set of these tires. With 200 treadwear rating I really only expected to get one summer out of my first set. I ended up getting four summers. These are an excellent summer only tire. Of course there are better stickier tires but not at this price.

Vehicle: 2009 Subaru Forester 2.5 X Base Model
Miles Driven on Tires: 2,000
Driving Conditions: Combined Highway/City
Location: REDFORD, MI
Driving Style: Spirited

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June 02, 2024
(Verified Purchase)
3.7 out of 5 Star Rating
3.7 out of 5

...The last set lasted me 2 summers and about 16-20,000 mi of daily spirited and abusive driving... The second summer I could definitely tell a slight loss in grip from the rubber hardening slightly but they still performed great. I used them down to 1/32nd and probably could have gone further...

Absolutely loved these tires so much that i just got a new set. The last set lasted me 2 summers and about 16-20,000 mi of daily spirited and abusive driving. I never used them on track or autocross only street driving mostly back roads during my 60 mi round trip commute to and from work. The second summer I could definitely tell a slight loss in grip from the rubber hardening slightly but they still performed great. I used them down to 1/32nd and probably could have gone further. If you're looking for a CHEAP high performance street tire I highly recommend these, you won't be disappointed.

Vehicle: 2013 Ford Focus ST
Miles Driven on Tires: 18,000
Driving Conditions: Combined Highway/City
Location: ZIEGLERVILLE, PA
Driving Style: Spirited

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Consumer Reviews

Media Gallery

Confirming Optimal Track Tire Pressures: 14 Extreme Performance & Competition Tires Tested on a BMW M2(05:55)

One of the most frequently asked questions among enthusiast drivers is, “What tire pressure should I run for optimal performance?” This test sets out to answer it! 14 popular Extreme Performance and Competition ran their skidpad laps on our M2, and the full spectrum from 26 to 42 psi was tested. So, want to learn what we learned? Watch now!



Read the Full Test Report

Comparing the Newest and Best Extreme Performance Summer Tires(05:28)

Today's Extreme Performance Summer tires deliver traction and handling that just a few years ago was only matched by true race tires. The category continues to expand, but it seems we have reached a performance plateau. To see if one of the two new Extreme Performance Summer tires can leapfrog the established leaders, we put them to the test.

Read the Full Test Report

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