Tire Blowout problems of the 1996 Ford F-350

This 16 inch tire blew out while in az on a trip. It was on a 1996 motorhome with a Ford chassis. There was 5/16 inches left of tire wear. The tread peeled of just as shown on tv. I have the tire. I have written to firestone only to get a canned reply. I know this is a 16 inch tire and the recall is for 15 inch tires. But I feel that because the same is happening under the same conditions as the 15 inch, it desrerves consideration. This was a motorhome and not a SUV either. That would be additional evidence that the tire is the problem and not the car!( dot number: 25582urbd9 tire size: lt225/7516 ).