Understanding Your Tires

Service Description

Your tire's load capacity is a critical factor when it comes to safe operation and must properly match up with axle capacities and your overall loaded vehicle weight. This 'Tire Tips' video shows how to ensure that your tire and axle configuration follow the specs that came with your truck.

A tire’s load capacity and speed limits are indicated by the tire service description located on the sidewall.
Size & Service

Load Index
The load index indicates how much weight a tire is capable of carrying safely (Single/Dual).

Load Index

Speed Category 
The maximum speed indicates the top speed at which the tires are designed to operate safely. 

Speed Category

Related Information

Understanding Your Tires

Reading a Sidewall
Tire Dimensions