I own a 2004 Oxford White mustang GT and it has about 31000 miles on it and the breaks just dont stop like they use too..no squeeking yet, and yes I have done quiet a few burnouts with them and do alot of in town driving light to light.
Pull your front wheels off and have a look at the pads. Pay close attention to the inside pad as they wear faster. The rears should still be okay unless your ebrake is sticking.
if you cant spell brakes, or dont know when they are ready to be replaced. then maybe you shouldnt be working on the most important safety item on the vehicle...not being rude, im just a victim of people who try and shouldnt.