Dodge Ram Commercial2016 Owner's Manual page 642

640 IF YOU NEED CONSUMER ASSISTANCE
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES . . . . . . . . . . . . . . . . .647
▫ Treadwear. . . . . . . . . . . . . . . . . . . . . . . . . . .647
▫ Traction Grades . . . . . . . . . . . . . . . . . . . . . . .648
▫ Temperature Grades. . . . . . . . . . . . . . . . . . . .648