RAM 2012 Truck Chassis cab Owner's Manual page 478

476 IF YOU NEED CONSUMER ASSISTANCE
Department Of Transportation Uniform Tire
Quality Grades . . . . . . . . . . . . . . . . . . . . . . . . 483
Treadwear . . . . . . . . . . . . . . . . . . . . . . . . . 483
Traction Grades . . . . . . . . . . . . . . . . . . . . . 483
Temperature Grades . . . . . . . . . . . . . . . . . . 484