Toe-In Curve Check & Adjustment: Notes

NOTE: An incorrectly adjusted toe-in curve adjustment causes the vehicle to pull to one side when braking or accelerating or when driving over bumps. Toe-in curve adjustment can also be referred to as toe constant "S" adjustment.

If the suspension is compressed or extended its toe will change depending on the amount of compression or extension. The resulting toe measurements are described as the toe in curve. The change in the toe constants "S" is adjusted when the vehicle is raised by vertically shifting the toe head. See Figure .

The wheel alignment computer calculates the toe constant "S" through a measured value in the starting position and through a measured value in lifted position. It compares the actual values with the specified values and displays them on the screen. Depending on suspension different adapters are required for lifting.

Toe-in curve is adjusted when vehicle is raised to initial setting position, by vertical adjustment of the tie-rod end. Different adapters are needed for lifting, depending on suspension variation. To identify application of suspension and adapter, see Fig 1 . To identify adapter, see SPECIAL TOOLS .

To prepare vehicle for checking toe-in curve adjustment, place vehicle in initial position. See BRINGING VEHICLE INTO INITIAL POSITION FOR TOE IN CURVE ALIGNMENT (SUSPENSION VARIATIONS 1BA, 1BM, 1BE, 1BD, 1BG, 1BN & 1BT) or BRINGING VEHICLE INTO INITIAL POSITION FOR TOE-IN CURVE ALIGNMENT (SPORT SUSPENSION 1BE) .

Fig 1: Identifying VAG Suspension Adapter To Adjust Toe-In Curve

Courtesy of AUDI OF AMERICA, INC.