Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Toe-In Curve Check & Adjustment: Notes
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) .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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