Tires Definitions

 

Rim Width

The linear distance between the flanges of the rim.

Section Height

Half difference between the overall diameter and the nominal rim diameter.

Nominal Section Width

The section width of an inflated tire mounted on its theoretical rim and indicated in the tire size designation.

Section Width

The linear distance between the outsides of the sidewalls of an inflated tire excluding elevations due to labelling (markings), decorations, or protective bands or ribs.

Nominal Rim Diameter

Is a size code figure for reference purposes only, as indicated in the tire and rim size designation.

Overall Diameter

The diameter of an inflated tire at the outermost surface of the tread.

Overall Width

The linear distance between the outsides of the sidewalls of an inflated tire including elevations due to labelling (markings), decorations, or protective bands or ribs.