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: Notes
When the suspension is compressed (bumped) or extended (rebounded) the toe of the wheel changes relative to the amount of compression or extension. The resulting change in toe-in, is defined as "toe constant S." If toe-in curve needs adjustment, front toe in should be adjusted AFTER toe-in curve adjustment.
The toe-in curve must be checked in the following cases:
- If the vehicle has been in an accident or sustained damage to the suspension components and/or bodywork.
- If the vehicle does not maintain direction of travel over bumps and when braking or accelerating.
- If front upper link is removed or replaced.
- If front strut upper mounting bracket is removed or replaced.
- If front wheel bearing housing is removed or replaced.
- If front tie rod isremoved or replaced.
- If steering gear is removed or replaced.
- If front subframe is removed or replaced.
Begin toe-in curve adjustment by setting suspension to starting position.
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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.