Brake inspections should be done after a specified period of time and they should also be frequently carried out whenever wheels are removed or when any brake system defect is suspected.Brake pulling to one side, squealing or dragging brake noises, excessive travel on the brake pedal, pulsation in the pedal, and leakages of the brake fluid warn a driver about his/her brake system Disc brakes can be assessed visually through removing hub caps, loosening wheel lug nuts, jacking up the vehicle with a jackstand and remove the wheels giving access to disc brake caliper and pads.Inspect both inner and outer wear pads comparing measurements with specified limits. Replace once it goes below. Also inspect the disc for worn spots, score marks or burnt spots wherein it will require servicing or replacement if these are noticed. Brake lines and hoses need to be examined for signs of damage, wear and leaks before wheel installation.For rear drum models of drum brakes tap their drums to free them by making sure that parking brake is off.Spray cleaner on all parts of the brake assembly including shoes' lining thickness at front and back which will have to be replaced in case it falls below required limit or show indications for damage or fluid contamination.Ensure all springs related to the assembly are intact as well as inspect whether there are any fluid leakage especially in a wheel cylinder.If necessary clean interior part of drum looking out for imperfections then take another set of wheels into consideration.The operation capability of a booster can be tested following certain steps whereas proper adjustment of parking brakes can either involve counting clicks during slow application or testing on steep slope so as to prevent rolling away.