Have you ever turned down your music because your car started making a strange sound? Whether it's a squeal, knock or rattle, unusual noises are often your car's way of telling you that something isn't quite right. While not every sound means an expensive repair, ignoring persistent noises could turn a small issue into a much bigger one. Here are five common car noises every driver should know. Squealing when braking One of the most common noises drivers hear is a high-pitched squeal whenever they apply the brakes. In many cases, this means your brake pads are wearing thin. Most brake pads are fitted with a wear indicator that produces a…