The U.S. Department of Transportation (DOT) has made it very easy to find union-made tires by requiring that each tire carry a code that shows the company and the location of the plant that manufactured the tire. DOT requires that each tire sold in the United States carry a code that looks something like this: DOT BE XX XXX XXX. The two letters or numbers that follow the DOT identify a particular factory as listed below.
BE: B.F. Goodrich, Tuscaloosa, Ala.
BF: B.F. Goodrich, Woodburn, Ind.
VE, YE, YU, 8B: Bridgestone/Firestone, Des Moines, Iowa
D2, E3, W1, Y7: Bridgestone/Firestone, La Vergne, Tenn.
2C, 4D, 5D: Bridgestone/Firest...