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Bumpsteer is a situation in which the front tires basically steer themselves, without any input from the driver. This 'self steering' occurs if the toe setting changes excessively as the tires move up and down over bumps, and when the body rolls during cornering. If the steering geometry is optimized, bumpsteer's effects are minimal. Excessive bumpsteer results in a 'Stang making unplanned and sometimes-dramatic changes in direction. With the Maximum Motorsports bumpsteer kit, excessive toe changes are eliminated, and the amount of bumpsteer that results from suspension travel can be adjusted to cause more desirable handling characteristics. For our Shelby, bumpsteer was adjusted to eliminate the small amount of roll understeer that Ford designs into the front-suspension geometry of all S197s.