What does having "radial" on the tire sidewall signify?

Having "radial" on the tire sidewall signifies a specific type of tire construction. Radial tires feature layers of fabric and steel belts that are arranged radially, extending from the center of the tire outward to the edge, which contributes to better performance characteristics. This construction provides increased flexibility in the sidewalls and improves traction, handling, and fuel efficiency compared to other types of tire constructions, such as bias-ply tires. Understanding this designation is critical, as it helps drivers choose tires suitable for their vehicle's performance needs and enhances overall driving safety and efficiency.