replacement tires

[jwbups]

My 2006 Elite suite,3207, had a tire fail on the way to Camping world on Tuesday afternoon. Lots of tread as we put about 3000 miles on the unit yearly, going to Fla. from Mich. Belle tire looked at the tires and said 2006 tires were okay, 6-7 years was when they start having problems. Have got prices for all 4 tires replacing them with the 17.5 h tire at $1820-$2200 for 4 tires. Belle tire wanted to sell me Firestones for $1838, another tire store offered Nanook tires same size for $1100. For safety and peace of mind still looking at the Goodyear, but tire date is Dec 2014 for the Goodyears. Any thoughts or suggestions appreciated