How to align the rear end of the XR4TI:

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Multiply the degrees that the camber is off by 2.1 inches. Find the SIN of that number. This is the amount, in inches of the shims that need to be installed to fix the camber.

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Multiply the degrees that the toe is off by 3.6 inches. Find the SIN of that number. This is the amount, in inches of the shims that need to be installed to fix the toe.

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The complete write up can be found at www.Merkurencyclopedia.com