True or False: Radial tires must have the word "radial" molded into the sidewall.

The statement is true because radial tires are designed with specific internal construction that differentiates them from other types of tires, such as bias ply tires. The word "radial" being molded into the sidewall serves as an identifier that ensures consumers and service professionals can easily recognize the tire's construction type. This identification is important for safety and performance reasons, as radial tires have distinct handling characteristics and benefits. While there may be exceptions in certain cases or variations in labeling, the standard practice mandates that tires labeled as radial include this designation for clarity and compliance with regulations.