Positive Offset:
When the center of the wheel is shifted outward (closer to the outside) from the center of the tire's contact surface, the offset is referred to as positive. In this configuration, the tire sits further inside the wheel well.
Zero Offset:
If the center of the wheel is directly aligned with the center of the tire's contact surface, the offset is considered zero. This positioning balances the tire's inner and outer protrusion from the wheel well.
Negative Offset:
When the center of the wheel is shifted inward (closer to the engine compartment) from the center of the tire's contact surface, the offset is negative. In this scenario, the tire extends beyond the plane of the wheel well, offering a "deep dish" appearance.
Wheel Offset Significance:
1. Handling Characteristics:
The offset influences the handling behavior of a semi-truck. Positive offsets tend to make a truck more stable, while negative offsets may enhance maneuverability.
2. Aesthetics:
The offset plays a role in the aesthetics of a semi-truck. Deep-dish wheels with negative offsets can have a visually appealing and sporty look.
3. Wheel Well Clearance:
Offset selection considers the vehicle's suspension, wheel well dimensions, and potential rubbing or interference with other vehicle components.
4. Wheel and Tire Fitment:
The appropriate wheel offset ensures proper fitment, avoiding situations where the tire protrudes beyond the truck's body or impacts the suspension components.
5. Tire Wear and Performance:
Incorrect offsets can lead to uneven or premature tire wear and may impact the overall performance and safety of the truck.
