What Causes the Rear Wheel to Make Abnormal Noises?

[MacAndres]

Abnormal noises from the rear wheel of a car may be caused by issues such as faulty wheel hub bearings, accidental contact of the brake pump with the brake disc, foreign objects attached to the tire surface, or abnormal tire pressure. Below is a detailed introduction about car tires: Overview: Car tires are one of the essential components of a vehicle, directly in contact with the road surface. Together with the car suspension, they help absorb shocks during driving, ensuring good ride comfort and smooth operation. Function: They ensure good adhesion between the wheels and the road surface, improve the vehicle's traction, braking, and off-road capability, and bear the weight of the car. The important role of tires in vehicles is increasingly being recognized.

[DelRuby]

There are actually quite a few reasons for rear wheel noise. From my own experience in car repair, here are some common situations: A bad wheel bearing is the most typical—when driving, you'll hear a humming sound that gets louder with speed. The brake system can also be problematic; if a pebble gets stuck or the brake pads are worn out, it'll cause a squeaking noise, especially noticeable when lightly braking. Another possibility is a faulty shock absorber, which makes annoying thumping sounds over speed bumps. Tires can also be troublesome—while small stones stuck in the tread are minor, a punctured nail is serious. Even loose items rattling in the trunk might be mistaken for wheel noise. Never ignore these sounds—they're warning signs. Get your car lifted and thoroughly checked by a reliable mechanic as soon as possible for peace of mind.

[Donovan]

My old car had this exact issue before. The rear wheels started making creaking noises while driving, especially when going over bumps. At first, I thought it was a nail stuck in the tire, but couldn't find anything after thorough inspection. The mechanic later diagnosed it as a suspension system problem - a worn-out rubber bushing, which is very common for cars that have been driven for five or six years. Loose brake caliper springs are another frequent culprit, producing that awful metallic scraping sound that makes your hair stand on end. A friend of mine had his wheel hub bearings rusted from water ingress, which turned out to be quite troublesome to fix. You really shouldn't ignore these abnormal noises - last time I delayed the repair for just two extra weeks, and it ended up costing me several hundred yuan more in repair fees.

[EliasAnn]

Rear wheel noise should be considered in two scenarios: A humming sound during normal driving is likely a bearing issue, while a clicking noise when turning is probably due to a problem with the drive shaft. A sharp screeching sound during braking can usually be attributed to the brake system, either from worn brake pads or a warped brake rotor. Additionally, in humid weather, temporary noises may occur due to rust on some metal components, which typically resolves after driving for a while. Regardless of the cause, if the noise persists for more than three consecutive days, immediate attention is required. Any issues with wheels while driving are serious matters, and compromised parts should never be neglected—replace them as needed.

[VanAxel]

Common culprits of rear wheel noise include the following: damaged bearings produce a dull humming sound at speeds above 30km/h; the brake pad wear indicator touching the disc creates a metallic scraping noise; worn suspension linkage ball joints cause a knocking sound on bumpy roads; while tire deformation results in a rhythmic flapping sound. I recommend starting with simple checks: apply the handbrake and push the car body to listen for changes in noise, secure all items in the trunk, and remove stones stuck in tire treads. If the noise persists, professional equipment is needed. A repair shop will lift the car and rotate the wheels to locate the source, replacing bearings or brake components if necessary.