2011 Lexus GX 460 Owners Manual - Page 776

6-1. Specifications Tire related term Radial ply tire Meaning A pneumatic tire in which the ply cords that extend to the beads are laid at substantially 90 degrees to the centerline of the tread A tire designed to operate at higher loads and at higher inflation pressures than the corresponding standard tire The linear distance between the exteriors of the sidewalls of an inflated tire, excluding elevations due to labeling, decoration, or protective bands That portion of a tire between the tread and bead The parting of the rubber compound from the cord material in the sidewall A tire that attains a traction index equal to or greater than 110, compared to the ASTM E-1136 Standard Reference Test Tire, when using the snow traction test as described in ASTM F-1805-00, Standard Test Method for Single Wheel Driving Traction in a Straight Line on Snow-and Ice-Covered Surfaces, and which is marked with an Alpine Symbol ( on at least one sidewall ) Reinforced tire Section width Sidewall Sidewall separation Snow tire 784