radial tire

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A pneumatic tire in which the ply cords extending to beads are laid at approximately right angles to the center line of the tread.

from the GNU version of the Collaborative International Dictionary of English.

• (Automobiles) a motor vehicle tire in which the cords run at right angles to the plane of the tire (considered as a disk).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A style (or method of construction) of tires used for most vehicles, which incorporate reinforcing cords distributed radially relative to the hub (at 90 degrees to the direction of travel).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun pneumatic tire that has radial-ply casing