Brake pads may be worn down to the brake "squealers".
ball joints
The wheel bearing.
The squeak is your tires losing traction on the pavement. Prominent in rear wheel drive cars.
Can you give more detail? Is it squeak, squeak, squeak or squeeeeeeek? I'm assuming that it only occurs when the car is moving. Does putting the brakes on make it change? --Ken It does make squeeeeek sound when car is moving and putting brakes on does change it.
bad wheel bearing.
check wheel bearings!
The brakes can squeak, the suspension can squeak, the steering can squeak, the wheel hub/bearings can squeak, have a trusted mechanic determine the source of the squeak.
I've greased that wheel, but it still has a squeak. I managed to squeak by the accident scene without a scratch.
A dry wheel bearing will cause the rear wheel to squeak at low speeds. The wheel bearing should be checked immediately to avoid a major problem.
Check your wheel bearings. Dry wheel bearings can squeak but should also make a grinding noise at higher speeds. A loose wheel bearing can cause the brake rotor to be at an angle which rubs against the brake pad or wear indicator causing a squeak noise. These are a couple common causes. Find a safe area, raise the car and support it with jack stands. Rotate the squeaking tire and see if you can tell what is making the noise.
Check your power steering fluid or your fan belt could be making noise.
it could be the breaks, or the shock could be hitting against the wheel