2014 NISSAN VERSA Wheels Problems

TIRE PURCHASED FROM DEALERSHIP 1 YEAR AGO, TIRE TREAD SEPARATED, NEARLY CAUSING BLOWOUT, WHILE IN MOTION ON HIGHWAY. HAD I NOT TAKEN PRECAUTIONS I COULD HAVE BEEN KILLED. PRECAUTIONS TAKEN DUE TO ON THE JOB SAFETY PROFESSIONAL DRIVING SKILLS. TIRES ARE CALLED NEXEN AND ARE SOLD BY NISSAN DEALERSHIP IN CORPUS CHRISTI, TEXAS. DOT # DOT8ELX

I BOUGHT THIS CAR ON 02/14/2014 AND YESTERDAY WAS THE FORTH TIRE TO GO FLAT ALL FOUR HAVE BEEN ON THE BACK DRIVER SIDE. THE FIRST TWO I'M NOT 100% ON WHAT CAUSED IT AS I JUST ASSUMED I RAN OVER A NAIL THE FIRST TIME AND THEN JUST HAD BAD LUCK ON THE 2ND TIME. THE THIRD TIME (STARTING IN OCTOBER OF 2014-RIGHT AFTER THE 2ND FLAT AND GETTING A BRAND NEW TIRE) THE TIRE PRESSURE LIGHT WOULD COME ON. WOULD CHECK AND IT WOULD BE LOW. I TOOK IT BACK TO THE LOCATION I GOT THE NEW TIRE FROM AND THEY COULD NOT FIND ANYTHING WRONG WITH IT. WHEN A FEW MONTHS WITH NO PROBLEMS. IN DECEMBER THE LIGHT CAME ON, TOOK TO A DEALERSHIP TO GET OIL CHANGED...THEY FOUND NOTHING WRONG WITH IT...THEY FILLED IT WITH AIR. AGAIN I HAD NO PROBLEMS UNTIL IT WAS TIME FOR...