2013 HEARTLAND SUNDANCE Wheels Problems

WITH ONLY 7000 MILES ON TOW MAX TRAILER TIRES, ST235/80R-16/10 HIGHWAY BW, RIGHT FRONT TIRE ON FRONT AXLE SEPARATED WITH ALMOST ALL OF THE REMAINING TREAD GONE. NEW TIRE PUT ON - WE PAID $100 - REBATED $70 FROM TIRE COMPANY. ON 1/23/14, ONLY 3000 MILES LATER, NOTICED LEFT FRONT TIRE, SAME AXLE, SEPARATING. DROVE TO QUALIFIED TIRE STORE AND EXPECTED TO HAVE THAT TIRE REPLACED, ONLY TO FIND OUT THAT WITH THE EXCEPTION OF THE FIRST TIRE REPLACED, THE REMAINING 3 TIRES WERE ALL SEPARATING AND VERY CLOSE TO BLOWING OUT. HAVE GONE ON OUR OWNERS FORUM AND READ ABOUT SO MANY OTHER RV OWNERS HAVING DANGEROUS ISSUES WITH THIS BRAND. HAVE CONTACTED THE RV MANUFACTURER AND THEY SEEM TO THINK GETTING 7000 MILES ON A TIRE IS GOOD. REALLY??? WE WANTED THEM TO AT LEAST GIVE US A FEW DOLLARS BACK ON THESE TIRES SINCE WE WANTED TO...