632 IF YOU NEED CONSUMER ASSISTANCE
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES . . . . . . . . . . . . . . . . .639
▫ Treadwear. . . . . . . . . . . . . . . . . . . . . . . . . . .639
▫ Traction Grades . . . . . . . . . . . . . . . . . . . . . . .640
▫ Temperature Grades. . . . . . . . . . . . . . . . . . . .640