Here is what I found out from the Wal-Mart stuff:
Plies:
Tread: 2 Polyester + 2 Steel + 2 Nylon
Sidewall: 2 Polyester
Sizes:
31x10.50R15C
LT225/75R16E
LT235/85R16E
LT245/75R16E
LT265/75R16C
LT265/75R16E
LT245/75R17E
LT265/70R17C
LT265/70R17E
Plies:
Tread: 2 Polyester + 2 Steel + 2 Nylon
Sidewall: 2 Polyester
Sizes:
31x10.50R15C
LT225/75R16E
LT235/85R16E
LT245/75R16E
LT265/75R16C
LT265/75R16E
LT245/75R17E
LT265/70R17C
LT265/70R17E