Nankang sportnex NS-25
The Nankang Sportnex NS-25 is perfectly balanced for today's higher performing vehicles.
NHTSA-reported issues for nankang nankang sportnex NS-25
Top issue category: Tread / Belt
Most reported: Tread / Belt (44) · Tires (General) (41) · Sidewall (13) · Markings (1) · TPMS (1)
What owners described
Blowout or sudden deflation appears in 42% of these reports; about 2.1× as often as across all tire complaints. Percentages are shares of the 86 reports covering every model year of the Nankang that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Blowout or sudden deflation | 42% | 20% | 2.1× |
| Tread or belt separation | 28% | 13% | 2.1× |
| Sidewall failure | 26% | 15% | 1.7× |
| Bubble or bulge in the tire | 12% | 6% | 2.0× |
| Cracking or dry rot | 5% | 9% | 0.5× |
| Loss of control, rollover or collision | 5% | 8% | 0.6× |
Mileage at failure
42 of these reports state an odometer reading. The middle report is at 5,000 miles, with 8 in 10 falling between 1,300 and 72,803 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Nankang. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
THE CONTACT OWNS A 2008 DODGE AVENGER EQUIPPED WITH A NANKANG SPORT TIRES, SIZE: 245/45R/18. THE CONTACT WAS DRIVING 65 MPH WHEN THE REAR PASSENGER'S SIDE TIRE BLEW AND CAUSED THE VEHICLE TO SHAKE EXCESSIVELY. THE TIRE WAS REPLACED WITH A DIFFERENT BRAND FULL SIZE TIRE. THE DEFECTIVE TIRE WAS INSPECTED AND THE CONTACT DISCOVERED THAT THE TREAD BEADING HAD SEPARATED FROM THE TIRE. THE APPROXIMATE VEHICLE FAILURE WAS 10,500 AND THE TIRE FAILURE MILEAGE WAS UNKNOWN..... UPDATED 10-17-13 *BF THE CONSUMER STATED SHE EXPERIENCED ANOTHER TIRE FAILURE ON THE LEFT PASSENGER SIDE. THE TIRE BEAD SEPARATED AND THE VEHICLE BEGAN TO VIBRATE.
There was a pencil mark on the inside tire wall where there was a leak. On the test drive there was a light on the dash indicating low pressure. Prior to pick up I was told it was repaired. On -27-23 I was driving the car and was lusting towards the center of the road after I regained control I had the tire checked at a tire shop and found that a patch had been put on the inside of the tire on the sidewall. The problem was reported to BBB and the dealer has not responded. I am in possession of the tire. No one has inspected the tire.
NANKANG STEEL BELTED RADIAL TIRES, TIRE SIZE P235/75R15, DOT NUMBER NOT AVAILABLE TIRES ONLY HAD 20 THOUSANDS MILES ON THEM. WHEN DRIVING 65 MPH LEFT REAR TIRE TREAD SEPARATED FROM SIDEWALL AREA, CAUSING LOSS OF CONTROL.*AK THE SECOND TIRE SHREDDED WHILE THE CUSTOMER WAS TRAVELING AT 65 MPH.
IN LESS THAN 300 MILES I HAVE HAD THREE TIRE FAILURES (TREAD SEPARATING FROM THE TIRE BODY). IN TWO OF THE CASES I WAS MOVING AT HIGHWAY SPEEDS AND IN THE OTHER I FOUND THE TREAD SEPARATION DURING NORMAL INSPECTION. TIRE FAILURE ON AN RV COULD CAUSE VERY SERIOUS ACCIDENTS SHOULD THE RV SERVE OR TURNOVER CAUSING THE TOW VEHICLE DRIVER TO LOSE CONTROL.
Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA; they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.
Specs
| Brand | Nankang |
|---|---|
| Model | Nankang Sportnex NS-25 |
| Season | N/A |
| Type | N/A |
| UTQG treadwear | N/A |
| UTQG traction | N/A |
| UTQG temperature | N/A |
| Mileage warranty | N/A |
| Noise (dB) | N/A |
| Introduced | N/A |
Live prices
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Available sizes (0)
Size data being verified.
Nankang nankang sportnex NS-25: what the numbers tell you
Manufacturer treadwear data for the Nankang Sportnex NS-25 is not publicly listed. This is common for OEM-only or track-day tires that don't carry a US treadwear warranty. No mileage warranty is published for this tire, which is typical for performance summer and track-day rubber where the manufacturer doesn't make wear-life claims.
Cabin noise data for this tire is not published by the manufacturer. As a general tire built for the passenger segment, the Nankang Sportnex NS-25 is positioned against direct rivals within the same category. Comparing it to a tire in a different category (e.g. summer vs all-season) makes the spec sheet misleading because the design targets are not the same.
The Nankang Sportnex NS-25 is perfectly balanced for today's higher performing vehicles.
For an apples-to-apples comparison against direct rivals, see the comparison pages linked from this tire's brand index.
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Last verified 2026-09-02.