We may know tire balance from the media or vehicle handbook at the bottom of our glove  compartment，however it’s diffcult for many of us to tell the differences between the static  balance and dynamic balance.  

“Static balance requires the wheel center of mass to be located on its axis of rotation, usually at  the center of the axle on which it is mounted…Dynamic balance requires that a principal axis of  the tire's moment of inertia be aligned with the axis about which the tire rotates, usually the axle  on which it is mounted.” (says WiKi )  

To comprehend this difference, the drawing presents the visual understanding as below:

Dynamic balance is especially important for trucks in long haul and heavy duty. Abnormal  vibration or noice, uneven wearing of tires might be caused by dynamic balance issues. Every  piece of tire out from Paxxon has been tested following the A TMC recommended practice (RP)  which is a specification or practice that assists equipment users, vehicle/component  manufacturers and other industry suppliers in the purchase, design, maintenance and  performance of commercial vehicle equipment. Current Technology Maintenance Council limits  from RP 214B Tire/Wheel End Balance and Runout section.