1. Worn-out or damaged shocks or struts: Worn-out shocks and struts can no longer effectively dampen the movement of the suspension system. This can cause the chassis of the vehicle to bounce and hit against the tires as it travels over bumps and uneven surfaces, resulting in a banging noise.
2. Loose or worn suspension components: Various components of the suspension system, such as springs, control arms, ball joints, and tie rod ends, can loosen or become worn over time. When this happens, they might not be able to properly hold the tire in place, causing it to move around and knock against the wheel well or other parts of the undercarriage.
3. Damaged tire or wheel: A damaged or bent tire or wheel can cause the vehicle to vibrate excessively, leading to knocking sounds coming from the rear of the vehicle. This can also occur if the lug nuts holding the wheel in place are loose or not properly tightened.
4. Failed wheel bearing: A worn-out or failed wheel bearing can cause a grinding or knocking sound when the affected wheel is turning. This can be particularly noticeable when cornering or turning at low speeds.
5. Loose exhaust components: The exhaust system may also produce banging noises if certain parts, such as the muffler, tailpipe, or catalytic converter, become loose or detached from their mounting points. This can cause the exhaust components to rattle or vibrate, creating a knocking noise.
If you hear a banging or knocking noise near the rear tire, it's essential to have the vehicle inspected by a qualified mechanic as soon as possible. This is necessary to identify and address the source of the noise before it causes further damage or compromises the safety of the vehicle.
