
Nankang AS-3 - 255/40R21
SKU: AS3-2554021-102YXL

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SKU: AS3-2554021-102YXL
Nankang
AS-3
Nankang AS-3 - 255/40R21
$212.85
Per tire
Description
The AS-3 tire represents a new generation of performance for electric vehicles. Engineered with advanced rubber compounds and cutting-edge technologies, it combines durability, energy efficiency, and driving comfort. Perfect for drivers seeking a reliable, quiet, and long-lasting tire, the AS-3 stands out with its excellent wet grip and low rolling resistance.
- Advanced rubber technology: New-generation rubber compound with nanomaterials for optimal performance.
- Noise reduction system: Acoustic simulation to control sound pressure and enhance comfort.
- Reinforced structure: High-strength belt cover to support EV weight and reduce rolling resistance.
New-generation rubber compound with nanomaterials
The AS-3 is built using an innovative rubber blend that incorporates advanced nanomaterials, specifically designed for electric vehicles. This technology allows it to achieve a grade B in rolling resistance and a grade A in wet grip on the EU label. The result is safer handling in wet conditions, better energy savings, and exceptional durability, with a treadwear lifespan of over 40,000 kilometers. The compound also enhances stability under high loads typical of electric vehicles.
Optimized acoustic control through sound simulation
To deliver superior driving comfort, the AS-3 was developed using acoustic simulation software to optimize sound pressure distribution. This high-tech approach helps reduce road noise—especially noticeable in quiet EV cabins—resulting in a smoother, quieter ride. The tire's ability to suppress unwanted frequencies creates a more refined and pleasant driving experience, even at higher speeds.
Reinforced internal structure with high-strength belt cover
Knowing that electric vehicles weigh more than their petrol counterparts, the AS-3 is equipped with a high-strength belt cover to improve structural rigidity and reduce rolling resistance. Additionally, the chamfered lateral grooves on the tread shoulders help prevent tread block deformation over time. This design enhances long-term performance, improves wear resistance, and supports better energy efficiency. A premium visual and tactile finish on the outer edge further reinforces the tire’s high-quality look and feel.
Specifications
Size
255/40R21
Manufacturer
Nankang
Model
AS-3
Usage
Summer / 4 seasons
Category
Ultra-High Performance
Sidewall
BSW
Runflat
No
Load index
102
Width
255.0 mm
Aspect ratio
40.0
Diameter
21.0"
Weight
30 lbs
Speed rating
Y (300 km/h - 186 mph)
Load range ply rating
XL
Studdable
No
Discontinued
N/A
Factory studded
No
UTQG
340 AA A
Evaluations
Customer Feedback
G * * * g | September 18, 2019
Thanks for sourcing the track tires for me!
C * * * g | November 28, 2023
I ordered 4 winter tires + wheels + TPMS sensors. The online ordering process was easy and they were delivered in around 10 days to BC. Prices were better than some other stores. After installation, my vehicle could not learn the new TPMS sensors. I contacted their support team and they helped me to solve the issue (thanks Yohan G.). I will definitely consider to buy from them again in the future.
B * * * n | November 5, 2023
Tires arrived packaged well. In good condition. My only negative was they weren't inflated with nitrogen to 42 psi. Otherwise everything was good.
P * * * t | November 3, 2024
Great selection, great service, extremely fast shipping. Will do business again for sure next time I need tires! 9 times buyer, more to come! Also, their customer service and support is top notch. Recently bought some steel rims for a 2017 jeep compass, along with tpms sensors for a customer of mine. I was stupid and jumped the gun and installed the sensors and mounted the tires on the rims before test fitting them. Unfortunately, the rims didn't clear the front calipers. I received amazing support trying to rectify the situation. They even sent me a selection of spacers for free to try and make them work. In the end, I was not able to make them fit properly. They took back all items, shipping prepaid, and issued a full refund! This level of service and support is extremely rare these days. I simply can not say how impressed and satisfied I am with pmctire.com! Customer for life!
J * * * s | March 16, 2024
Great service again with my recent purchase (summer wheels and tires for my car). Haven’t mounted yet but packaging for shipping was great as is the quality of mounting/balancing. Looking forward to installing them when the weather improves!

Wheels frequently bought with this tire (Free mounting and balancing!)
Get your tires mounted and balanced for free when purchasing wheels. Your set will be delivered already assembled, all that's left to do is mount them on your vehicle!