Bronchitis. Bronchitis is an inflammation of the lining of your bronchial tubes, which carry air to and from your lungs. People who have bronchitis often cough up thickened mucus, which can be discolored. Bronchitis may be either acute or chronic.
What does Centrebore mean? The âcenterboreâ of an alloy wheel is the size of the hole at the back of the wheel which the âhubâ fits into. To help the wheels to seat properly this hole needs to be an exact match to the size of the hub.
Community Q&A. Wheel bearings are a vital part of a vehicle's suspension. Usually located in the wheel's hub, rotor, or brake drum, bearings help the wheel rotate smoothly when the vehicle moves. If you notice a humming or whirring noise while you are driving or your ABS light turns on, it may be time to change your bearings.