What are the symptoms of a bad rear wheel bearing?

[DaisyLee]

There are three main symptoms when a rear wheel bearing fails: 1. Driving noise: Noise is the most prominent sign of a damaged wheel bearing, manifesting as a "humming" or buzzing sound during vehicle operation. 2. Vehicle vibration: If the bearing damage becomes severe, causing increased clearance, noticeable body vibration will occur during high-speed driving. 3. Unstable driving: When the front wheel bearing is excessively damaged, it may lead to unstable vehicle movement and erratic power delivery during high-speed operation. As the core component supporting vehicle weight and enabling wheel rotation, wheel bearings operate in extremely harsh conditions. They must endure driving pressures, vibrations, as well as exposure to rainwater and road debris. Even the highest quality wheel bearings cannot guarantee permanent durability under such demanding circumstances.