ASE A4 Suspension and SteeringSuspension System Diagnosis and RepairMedium
A client complains that their vehicle with a multi-link rear suspension feels unstable and 'wanders' at highway speeds. During a pre-alignment inspection, the technician observes that the rear wheels appear to be pointing slightly inward when viewed from above (toe-in). Which of the following components would MOST likely be adjusted to correct this condition?
- ARear toe links
- BRear camber links
- CRear shock absorbers
- DRear trailing arms
Show answer & explanationAnswer & explanation
Correct answer: A. Rear toe links
Toe-in (or toe-out) is primarily adjusted by the toe links in a multi-link suspension. Adjusting these links changes the horizontal angle of the wheel, correcting the 'wandering' and tire wear issues associated with incorrect toe.
Why the other options are wrong
- B. Rear camber links primarily adjust the vertical tilt of the wheel (camber), not the horizontal angle (toe).
- C. Rear shock absorbers control damping and ride quality, not static alignment angles like toe.
- D. Rear trailing arms primarily control the fore-aft position of the wheel and contribute to overall stability, but are not the primary adjustment for toe.
Multi-Link Toe Adjustment
In a multi-link suspension, the toe-in or toe-out angle of the wheels is adjusted by changing the length of specific links, often called toe links or tie rods.
- Toe links control horizontal wheel angle
- Adjustable for alignment correction
- Incorrect toe causes instability and tire wear
Memory trick: Toe links for toe-in, they're the key, to make your rear wheels point correctly!