Final answer:
A grinding noise when turning a car can be caused by several issues, including worn wheel bearings, faulty brakes, or a damaged CV joint or axle.
Step-by-step explanation:
When a car has a grinding noise when turning, it can be a sign of several issues. One common cause is a worn-out wheel bearing. A damaged or worn wheel bearing can produce a grinding or groaning noise when the car turns. Another possible cause is a problem with the brakes. Worn brake pads or warped rotors can create a grinding noise when turning. Finally, a faulty CV joint or axle can also be the source of the grinding noise.