The caster is uneven or incorrect.

Perform a front end alignment. Refer to Wheel Alignment Measurement in Wheel Alignment.

The control arm is loose.

Inspect the control arm ,replace as neccassary.

Refer to Lower Control Arm Replacement

in Front Suspension.

The brake rotors are warped.

Refinish or replace the rotors as needed. Refer to Front Brake Rotor Replacement in Disc Brakes.

The coil springs are broken or sagging.

1. Inspect the springs.
2. Service the coil springs as needed. Refer to Strut, Strut Component, and Spring Replacement in Front Suspension.

The front wheel drive shaft bearings are worn.

Replace the front wheel drive shaft bearings. Refer to Front Wheel Drive Shaft Bearing Replacement in Front Suspension.

The brake caliper is leaking.

Service the brake calipers as needed. Refer to Front Brake Caliper Replacement in Disc Brakes.