Requirements when selecting road track wheels.

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The backspacing (offset) on the car from the factory is different front and rear. If you are trying to find 1 wheel that fits the front and back of the car you need an offset that will work in the front and back. If you tried to get 4 RPF1s that were the exact same in with all the same offset, the spokes of the wheel would hit the caliper in the front. This is due to the offset and spoke design. Because of the big brakes up front, you need a lower offset in RPF1. This is okay because you can mount low offset wheels in the back too, but the wheels will stick out well past the front fenders with a low offset.

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