The front wheels are out of alignment.

Inspect and adjust the front wheel alignment. Refer to Wheel Alignment Measurement in Wheel Alignment.

The rack preload is misadjusted.

Adjust the rack preload to specification.

The stabilizer shaft is loose.

Inspect and replace the stabilizer shaft insulators, clamps, or links. Refer to Stabilizer Shaft Replacement in Front Suspension.

The shocks are worn.

Replace the shocks as needed. Refer to Shock Absorber Replacement in Front Suspension.

The tires are worn uneven.

1. Inspect and perform the alignment as necessary. Refer to Wheel Alignment Measurement in Wheel Alignment.
2. Replace the tires as needed. Refer to Tire Mounting and Dismounting in Tires and Wheels.