Bump scrub is another name for bump steer. No, we are not talking cows here. If your suspension is not fully maxed out one of the problems you may encounter is bump steer. When a wheel goes though it's travel if the inner and outer tie rods for the steering are not placed in the proper location the wheel will actually change direction as it goes through the bump. This is a most unsettling feeling and restricts your best efforts of achieving a fast ride. Usually only a few washers either raising or lowering the outer tie rod will correct the problem.
Brian Hobaugh SCCA National Tour June 2014
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