Trailer Tires

I think I'll try the 16'' and load range "E".I have a 225-75-16 tire to test.Running 215-75-15 "E" now. E-Trailer carries several different rims in the $50-$100 range.Plan is to get 1 rim and mount tire to check for clearance. Being from Nevada I do know that dry and heat plays a big part in the destruction of tires.