2013 HYUNDAI EQUUS Suspension Problems

I WAS DRIVING ON I-85 S FROM NORTH CAROLINA WHEN SUDDENLY MY CAR STARTS TO FEEL LIKE IT WAS DRAGGING. I CONTINUED TO DRIVE FOR A FEW MORE EXITS TO SEE IF IT WOULD STOP. I GOT OFF AFTER FOUR EXITS, TURNED OFF THE CAR, AND CHECKED THE TIRES. NOTHING APPEARED WRONG. I WAITED SEVERAL MINUTES AND I STILL COULD NOT DETERMINE A PROBLEM SO, I RETURNED TO I-85 S. THE PROBLEM HAD STOPPED. SEVERAL DAYS LATER, THE PROBLEM RETURNED. I WAS DRIVING ON A CITY STREET WHEN SUDDENLY THE DRAGGING FEEL BEGAN. I TOOK IT TO THE DEALERSHIP BUT THEY WERE UNABLE TO FIND THE PROBLEM. I WAS TOLD TO RETURN WHEN/IF THE PROBLEM RE-OCCURRED. I CONTINUED TO DRIVE THE CAR IN THE CITY BUT PERIODICALLY IT WOULD FEEL LOPSIDED AND IT WOULD DRAG. ONCE I TURNED THE CAR OFF, IT WOULD RESET ITSELF AND STOP DRAGGING AFTER SEVERAL...

TEST DRIVE BEFORE PURCHASING WAS STOPPED AFTER A 1/4 OF MILE BECAUSE OF HEAVY FRONT END SHAKING. DEALERSHIP CHANGED TIRES SAYING THAT WOULD FIX THE PROBLEM. SINCE THEN IT HAS ALSO FIXED FRONT END ALIGNMENT TWICE, CHANGED THE DRIVESHAFT AND TWO REAR AXLES. VEHICLE STILL SHAKES. VEHICLE IS PERILOUS TO DRIVE ON BUMPY SURFACES WHEN DRIVER HAS DIFFICULTY CONTROLLING FRONT END. *TR