A type of tire in which the cords of the body plies run at right angles (radially) to the tire's centre line.
A tire construction in which the body ply cords are placed straight across the tire from bead to bead; the belt plies run nearly circumferentially around the tire, under the tread, and constrict the radial ply cords. See Diagram
In a radial tire tire fabric traverses the body of the tire at 90° to the tread direction. Atop the tire fabric are laid alternating narrow layers of fabric at low angles of 10 to 30 to the tread direction; the belt that is formed around the tire body restricts the movement of the body. 3
Tire design which uses body cords running at right angles to the center line of the tire. Two or more belts are used to give tread strength. Radials can be identified by their characteristic sidewall bulge.
A type of tire that's constructed with the reinforcing belts sideways under the tread rather than lengthwise. This makes the tire more flexible which reduces rolling resistance to improve fuel economy (See Tire Ratings). A radial tire can be identified by
A tire built with casing plies that cross the crown at an angle of 90 degrees.
A type of tire construction which has the main carcass plies or cords which run at right angles to the bead and parallel to the radius. By itself, this construction is very weak because when the bias angle is smaller, the structure is stiff. However, the radial tire has a very large bias angle. In order to strengthen the tire, a belt surrounds the circumference. This belt is made of low-angle plies (usually about 15 degrees). In this way, the tread area is stiff and the sidewall are flexible. In this way they can act independently of each other.
tires built with plies running perpendicular (90 degrees) across the crown of the tire. To strengthen the tread, these tires require belt plies going circumferentially around the tire.
A radial tire (more properly, a radial-ply tire) is a particular design of automotive tire (in British English, tyre). The design was originally developed by Michelin in 1946 http://www.senat.fr/basile/visio.do?id=a/commission/fin/Fin991120.html&idtable=a/commission/fin/Fin991120.html#toc18 but, because of its advantages, has now become the standard design for essentially all automotive tires.