2012 FOREST RIVER ROCKWOOD Steering Problems

INCURRED 2 TIRE BLOWOUTS. THIS IS A TWO AXLE FIFTH WHEEL. I HAD BEEN ON THE ROAD FOR APPROXIMATELY ONE HOUR ON A RETURN TRIP HOME. THIS RV IS ONLY 23 MONTHS OLD FROM DATE OF MANUFACTURE (FEB 2012) SO THE TIRES SHOULD BE FAIRLY NEW. ONE BLOWOUT WAS TO THE LEFT FRONT TIRE SO I REPLACED WITH THE SPARE TIRE. AFTER DRIVING APPROXIMATELY TEN MORE MILES I INCURRED ANOTHER BLOW OUT ON THE RIGHT REAR TIRE. I PROCEEDED TO REPLACE ALL FIVE TIRES INCLUDING THE SPARE TO AVOID ANOTHER MISHAP. DURING THE REPLACING OF ALL TIRES IT WAS POINTED OUT BY THE TECHNICIANS REPLACING THE TIRES THAT THE RIGHT FRONT TIRE ALSO HAD A LUMP THAT WOULD HAVE IN ALL PROBABILITY ALSO BLOWN OUT. THERE WAS QUITE A BIT OF CONSTRUCTION ON THE ROAD THAT I WAS ON SO I HAD HIT SOME ROUGH SPOTS BUT I DO NOT...