A belted radial tire is a type of tire that has layers of steel belts under the tread to strengthen the tire and provide better stability and handling. Synonyms for a belted radial tire include radial ply tire, steel-belted radial tire, and radial tire. Radial ply tire is a term used to describe any tire with a radial (rather than bias-ply) construction, and may or may not have steel belts. A steel-belted radial tire is similar to a belted radial tire, but specifically refers to a tire with two or more layers of steel belts. Finally, a radial tire is simply any tire with a radial construction, regardless of whether or not it has belts.