Every wheel rides on a bearing that carries the vehicle's weight while letting the wheel spin freely and precisely. On most modern vehicles the bearing is built into a sealed hub assembly, often with the ABS wheel-speed sensor mounted right in it. When a bearing wears, it loses its smooth, quiet rotation and starts to roar, hum, or growl — and because load shifts between wheels as you steer, the sound often changes with turns.
A failing bearing isn't just noisy; it can let the wheel develop play, which affects handling and can throw an ABS fault when the sensor can't read cleanly. At New Concept we confirm which wheel is actually noisy — bearings, tires, and brakes can all growl — check for play, and replace the bearing or hub assembly with attention to the ABS sensor that often rides along with it.