NHTSA Complaint #10584693 — 1997 FORD EXPLORER

ON 7/29/2013 WE PURCHASED A SET OF 4 KUMHO SOLUS KR21 TIRES. THE CAR IS USED PRIMARILY FOR HIGHWAY TRAVEL ? ONCE WEEKLY WORK COMMUTE AND FOR VACATION ROAD TRIPS. WE HAD NOT YET DRIVEN IT OFF PAVEMENT WITH THE NEW TIRES. ON 4/16/2014 I STARTED THE CAR TO GO TO WORK. I HEARD AN ODD NOISE FROM THE REAR PASSENGER SIDE, ALMOST LIKE A RHYTHMIC POPPING SOUND, BUT IT STOPPED, AND SINCE IT WASN'T IDENTIFIABLE I PROCEEDED TO LEAVE MY DRIVEWAY. ABOUT A BLOCK AWAY, I HEARD THE NOISE AGAIN, BUT AGAIN IT STOPPED. AT THIS POINT THE CAR WAS HANDLING FINE. AS SOON AS I GOT ON THE FREEWAY (APPROXIMATELY 2 MILES FROM MY HOUSE), I NOTICED I WAS HAVING TROUBLE ACCELERATING TO SPEED (65MPH). I ALSO BEGAN TO HEAR A RHYTHMIC BUMPING NOISE, SO BEGAN TO PULL OVER TO THE SHOULDER. BY THE TIME I GOT OVER, I COULD FEEL THE BUMPING AND KNEW I HAD A FLAT. THE REAR PASSENGER SIDE WHEEL HAD SUFFERED A COMPLETE SIDEWALL SEPARATION (SEE PHOTO). THE TIRES ONLY HAD 6,624 MILES ON THEM ? ALL PAVED ROAD, NO DIRT. THEY WERE SUPPOSEDLY WARRANTIED TO 85,000 MILES. IN RETROSPECT, I BELIEVE THE SOUNDS I HEARD IN MY DRIVEWAY WERE THE INITIAL SIDEWALL SEPARATION. THE SEPARATION DID NOT CAUSE IMMEDIATE LOSS OF AIR PRESSURE OR STRUCTURAL INTEGRITY; THAT ONLY HAPPENED ONCE I GOT ON THE HIGHWAY AND STARTED DRIVING AT 60MPH. THERE WAS NO EXPLOSIVE NOISE LIKE A BLOWOUT. IN SUBSEQUENTLY RESEARCHING KUMHO TIRES, I DISCOVERED THAT THIS BRAND HAS A LONG HISTORY WITH SUDDEN SIDEWALL SEPARATION AND/OR BLOWOUTS ? ALL AT LOW MILEAGES. THIS OCCURS ACROSS SEVERAL TIRE MODELS AND YEARS. THE COMPLAINTS WERE SO CONSISTENT THAT I WENT BACK TO THE TIRE DEALER AND REQUESTED A DIFFERENT BRAND. THEY REPLACED THEM AND I NOTIFIED THEM OF MY RESEARCH RESULTS. I AM VERY CONCERNED THAT KUMHO IS ALLOWED TO CONTINUE SELLING TIRES WITH SUCH A SAFETY RISK. I WAS VERY LUCKY THAT I DID NOT LOSE CONTROL AND THAT TRAFFIC AT THAT MOMENT WAS LIGHT. *TR