I have been running a set of Cooper SRM II Radial LT215/85R16 for 8 years (on original 6.50x16" 1954 1/2 ton wheels). Nice tires. They have a high profile and are about 31.5" loaded diameter (about 10% larger diameter than original).
If they still sell that brand, I hope to be buying a set for another truck within a year.
I have run with tubes for 8 years and my new set will be tubeless.
