What is the wheel offset?
The offset is the distance from where the wheel bolts to the hub out to the true centerline of the wheel. A negative offset means the true centerline of the wheel is in front of the mounting surface of the wheel. This would make the wheel/tire assembly stick out away from the vehicle. A positive offset means that the true centerline of the wheel is behind the mounting surface, thus putting the wheel/tire assembly deeper into the fender well.