2015 HEARTLAND GATEWAY Wheels Problems

TOWMAX POWER KING ST235/85 16R E RATED TIRES MANUFACTURED DATE 4113. I REALLY PRIDE MYSELF ON SAFETY AND TAKING CARE OF MY RV AND TIRES. RV IS KEPT INSIDE A 30X60 BUILDING AND CLEANED OFF AFTER EVERY TRIP. I CHECK THE AIR PRESSURE IN MY TIRES BEFORE I LEAVE TO GO CAMPING AND BEFORE I COME BACK HOME FROM CAMPING. AND I NEVER PULL FASTER THAN 65 MPH. 2 TIMES IN 2 WEEKS HAD BLOWOUTS WITH THESE TIRES WHICH CAUSED DAMAGE TO MY COACH. TIRES ARE KEPT CLEAN PROPER AIR PRESSURE AND HAS LESS THAN 4500 MILES ON THEM. BOTH TIMES I WAS TRAVELING ON THE INTERSTATE. LAST WEEK I WAS TRAVELING AT 64 MPH AND TODAY 55 MPH. THE FIRST BLOWOUT WAS MAY 19, 2016 I-12 NEAR THE NORTHSHORE MALL EXIT THE SECOND BLOWOUT WAS MAY 30, 2016 ON THE I-10 MISSISSIPPI BRIDGE IN BATON ROUGE, LA.