Brake repairs and maintenance are one of the most crucial parts to your vehicle's operation and safety. The nature of brakes means that some brake repair is unavoidable, and there are telltale signs that will dictate when your brakes need repairs.
If your brakes start to shudder or squeal, you may find it is time for new brake pads. Often, a mechanic will advise you of the state of your brake pads, and installing new pads requires a special bedding-in process to ensure your brakes work correctly. After a certain amount of time, you may also have to machine the brake discs themselves, or even replace the discs entirely. However, this does not occur regularly under normal use.
Brake fluid is also important, and you must ensure there is no air in the brake lines when replacing brake fluid. Your mechanic will know how to bleed the brakes and avoid this problem. Over time, you may find water in the brake fluid and this should not be left indefinitely or you could have problems with brake pressure.
See a specialist brake mechanic about brake repair.