It has to do with the regeneration. As you near a stop, you
let off the power pedal and the tires turn into generative
mode. This causes friction, and wears on the tire. My
regenerative tire wears out about twice as fast as the other
three.
That can be a major problem for handing.
Tires with unequal ware on opposite sides of the car can cause major differences in traction.
This can cause you to have difficulty in controlling the car in emergency maneuvers.
Only one wheel does the regenerating? I figured all 4 wheels shared that load.