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NHTSA-reported issues for hankook optimo H727
Top issue category: Tires (General)
Most reported: Tires (General) (4) · Tread / Belt (4) · TPMS (1) · Sidewall (1)
What owners described
Blowout or sudden deflation appears in 44% of these reports; about 2.2× as often as across all tire complaints. Percentages are shares of the 9 reports filed against the Hankook Optimo H727 across every vehicle it was fitted to 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 | 44% | 20% | 2.2× |
| Tread or belt separation | 22% | 13% | 1.7× |
| Sidewall failure | 22% | 15% | 1.5× |
| Pressure-monitoring (TPMS) fault | 22% | 2% | 9.3× |
| Cracking or dry rot | 11% | 9% | 1.2× |
| Premature or uneven wear | 11% | 1% | 8.5× |
Mileage at failure
10 of these reports state an odometer reading. The middle report is at 80,200 miles, with 8 in 10 falling between 14,596 and 180,000 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Hankook Optimo H727. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
THE CONTACT OWNS A 2000 HONDA ODYSSEY WITH HANKOOK OPTIMO H727 P215/65/R16 TIRES. THE CONTACT STATED WHILE DRIVING 60 MPH, THE CONTACT COULD FEEL A VIBRATION IN THE TIRES. THE VEHICLE WAS TAKEN TO THE TIRE SHOP FOR DIAGNOSTIC TESTING WHERE IT WAS CONFIRMED THE TREAD SEPARATED FROM THE REAR TIRES AND THE FRONT PASSENGER TIRE. THE TIRES WERE NOT REPLACED AND THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE VEHICLE FAILURE MILEAGE WAS 180,000 AND THE TIRE FAILURE MILEAGE WAS 50,000.
THE CONTACT OWNS A 2010 CHEVROLET MALIBU EQUIPPED WITH FOUR HANKOOK OPTIMO H727 TIRES, SIZE: 225/50R/18 (NA). UPON INSPECTION, IT WAS DISCOVERED THAT THE FRONT DRIVER SIDE TIRE EXPERIENCED TREAD CRACKING AND TREAD SURFACE DILAPIDATION OF THE INNER EDGE. THERE WAS ALSO EXPOSED STEEL BELTS AND EVIDENCE OF BUBBLING. THE FAILURE WAS REPORTED TO THE DEALER (APPLE BEES AUTOMOTIVE LOCATED IN FOX POINT, WI) WHERE IT WAS DIAGNOSED THAT THE TIRE APPEARED TO BE DEFECTIVE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE TIRE FAILURE MILEAGE WAS 40,000 AND VEHICLE FAILURE MILEAGE WAS 150,000.
THE CONTACT OWNS A 2006 FORD TAURUS EQUIPPED WITH HANKOOK OPTIMO H727 TIRES, SIZE: 215/60R16 (NA). WHILE DRIVING VARIOUS SPEEDS, THE STEEL BELTS PUNCTURED THE SIDE OF THE FRONT DRIVER'S TIRE. THE CONTACT STATED THAT THE DRILL SHOCK TOWER MOUNT WAS MISALIGNED. IN ADDITION, THE VEHICLE MADE A HOWLING SOUND WHILE DRIVING VARIOUS SPEEDS. DUE TO THE FAILURE, THE TIRE WAS REPLACED ON MORE THAN ONE OCCASION. BALISE MOTOR SALES IN SPRINGFIELD, MASSACHUSETTS WAS MADE AWARE OF THE FAILURE AND STATED THAT THE SHOCK TOWER MOUNT NEEDED TO BE DRILLED IN ORDER TO PERFORM A FOUR WHEEL ALIGNMENT TO PREVENT PREMATURE WEAR OF THE TIRES. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND RECOMMENDED THAT THE CONTACT REPLACE THE STRUTS. THE VIN AND DOT NUMBER WERE NOT AVAILABLE. THE FAILURE MILEAGE WAS APPROXIMATELY 31,000.
I HAVE A SET OF HANKOOK OPTIMO 727 TIRES ON MY FAMILY SUBURBAN, AND ONE OF THEM BLEW OUT SUDDENLY, AND UNEXPECTEDLY. THE TIRE THAT BLEW OUT ONLY HAD 14,596 MILES ON IT. THE SIZE IS P235-75-15. ALL FOUR OF THESE TIRES WERE INSTALLED IN FEBRUARY 2016, AND THE VEHICLE WAS ALWAYS KEPT IN MY GARAGE. THE TIRE THAT BLEW OUT SHOWED NO SIGNS OF SUN OZONE DEPLETION, AND AGAIN, IT NEVER SAT OUTSIDE IN THE SUN. ADDITIONALLY, THE TIRE THAT BLEW OUT HAD ALOT OF TREAD DEPTH LEFT. THE VEHICLE WAS NOT OVERLOADED, AS I WAS THE ONLY PERSON IN IT AT THE TIME OF THE BLOWOUT. I WAS SIMPLY DRIVING ABOUT 72 MPH DOWN INTERSTATE 65, JUST SOUTH OF LOUISVILLE, KY, I FELT SOME VIBRATION FOR ABOUT ONE MINUTE, THEN BOOM!, THE TIRE LET GO. I'M DISAPPOINTED IN HANKOOK TIRES, AND WILL NEVER BUY ANOTHER.
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 | Hankook |
|---|---|
| Model | Optimo H727 |
| 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.
Hankook optimo H727: what the numbers tell you
Manufacturer treadwear data for the Optimo H727 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 Optimo H727 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 Hankook Optimo H727 has been part of Hankook's catalog since its introduction, and remains a current-production model.
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 2026-10-07.