Passenger Tire Terminology

Posted On13.05.2020

The selection criteria for tires change depending on the type of vehicle you own and your style of driving. Learn more about the terminology and meanings of various parts of a passenger tire!

Tire Section Width

205/75 ZR15

Tire Section Width = Distance (mm) in a straight line between the sidewalls fitting to rim with standards air pressure and without loads.

 

Tire Section Height

Tire Section Height = Half of a distance which is the difference between tire’s outer diameter and rim diameter.

Aspect Ratio

205/75 ZR15

The ratio of Section Height to Section Width.
* Aspect Ratio = (Section Height) / (Section Width) X 100

 

Rim Diameter

205/75 ZR 15

The distance (inch) between the rim bases in contact with the rim flange (almost identical to the tire’s interior diameter).

 

Tire Overall Diameter

The outer diameter of tire fitting to rim with standards air pressure and without loads.

Source: Hankook