A knocking noise in front wheels can be caused by bad tires or a bad tire.
If the tires are bad then a knocking sound can be heard in the front wheels or when the tires are unbalanced or misaligned.
A broken tire belt can also cause a knocking noise in the front wheels.
If the tires are good then another cause of the knocking noise in the front wheels could be loose lug nuts, loose brake caliper or even bad wheel bearing that causes the wheel to move back and forth as in side to side.
Worn ball joints could also cause a knocking noise in the front wheels that occurs especially when you hit a bump.
Another cause of knocking noises in the front wheels can be worn shocks.
A clunking, rattling, or squeaking noise from your vehicles front end while driving can be annoying and unnerving.
Oftentimes, the clunking, squeaking or rattling noise means there is a problem with your vehicle's suspension system.
These sounds typically occur when driving over uneven surfaces, bumps, or potholes.
You're likely hearing a knocking sound from a noisy wheel bearing because it isn't rotating as freely as it should.
If you hear a thump towards the front of your car whenever you accelerate, it's probably a problem with either your starter motor mount or transmission mount.
Though small, transmission mounts have a huge impact on performance and the overall quality of your drive.
If you hear a clunking noise that is especially prominent when you drive over potholes or speed bumps, you probably have a problem with your shock absorbers or your suspension.
Continuing to drive with a broken or faulty shock absorber is a bad idea for the health of your car.
Commonly, engine knocking occurs because of a buildup of oily carbon deposits inside the combustion chamber.
This can be caused by burning oil or incomplete combustion from misfires, which coats pistons, cylinder heads, and other parts of your engine with residue.
The first sign of wheel bearing failure is excessive vibration.
Following this, the bearing will begin to heat up past acceptable levels and produce excessive noises, either high-pitched or grinding.