19A NCAC 03D .0539 TIRES - DEFINITIONS
As used in this and the preceding Rule, these terms have the following meaning:
(1) Rim is a metal support for the tire or tire and tube assembly on the wheel. Tire beads are seated on the rim.
(2) Bead is that part of the tire which is shaped to fit the rim. The bead is made of high tensile steel wires wrapped and reinforced by the plies.
(3) Sidewall is that portion of the tire between tread and bead.
(4) Cord is made from textile, steel wire strands forming the plies or other structure of the tires.
(5) Ply is layers of rubber coated parallel cords forming the tire body.
(6) Rib is the tread section running circumferentially around the tire.
(7) Groove is the space between two tread ribs. A tire shall not be approved if there is less than 2/32 inch tread at two or more locations around the circumference of the tire in two adjacent major tread grooves or if the tread wear indicators are in contact with the roadway at two or more locations around the circumference of the tire in two adjacent major tread grooves.
History Note: Authority G.S. 20-2; 20-39; 20-183.3(7);
Eff. October 1, 1994.