My existing Michelin 255/80x22.5 tires are 8 years old and I am replacing them. The Michelins I have on now I have been pleased with. When I bought them 8 years ago they were 2400 dollars out the door...
My local dealer advised me to go thru the above mentioned FMCA discount program. He said the tires are cheaper thru that program than he can buy them for. I think Michelin is the only brand you can buy thru it but since I do not need tires at the moment have not researched it yet.