620 IF YOU NEED CONSUMER ASSISTANCE
PUBLICATION ORDER FORMS . . . . . . . . . . . .626
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES . . . . . . . . .627
▫ Treadwear. . . . . . . . . . . . . . . . . . . . . . . . . . .628
▫ Traction Grades . . . . . . . . . . . . . . . . . . . . . . .628
▫ Temperature Grades. . . . . . . . . . . . . . . . . . . .629