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Wheels and The Proper Sizing

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Offset:
The offset of a wheel is the distance from its hub mounting surface to the center-line of the wheel. The offset can be one of three types (measured in millimeters).*

Zero Offset:

The hub mounting surface is even with the center-line of the wheel.

Positive:

The hub mounting surface is toward the front or wheel side of the wheel. Positive offset wheels are generally found on front wheel drive cars and newer rear drive cars.

Negative:

The hub mounting surface is toward the back or brake side of the wheels center-line. "Deep dish" wheels are typically a negative offset.

If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset also changes numerically. If the offset were to stay the same while you added width, the additional width would be split evenly between the inside and outside. For most cars, this won't work correctly. We have test fitted thousands of different vehicles for proper fitment. Our extensive database allows our sales staff to offer you the perfect fit for your vehicle.

*Backspacing, similar to offset, is the distance from the hub mounting surface to the inside lip of the wheel (measured in inches).

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