The best way to tell when you need brakes is by squeaking, when the brakes are rubbing against the metal, when your brake pedal goes all the way to the floor and when you are running out of break fluid.
you can go to grismer automotive service. They will check the tires and brakes and let you know the issues and tell you if the brakes and tires need to be replaced or serviced.
brakes need replaced
You can go to your local auto mechanic to have your brakes replaced. You need the to give you a quote and their expertise will make for the best repairs.
If your brakes feel like they are pulling you should get them checked out. These brakes may need to be replaced.
The best place to have your brakes replaced at would be Midas they would be able to replace both your brake shoes and even brake calibers if they need replaced.
Rear brakes do not have to be replaced too often. It's really hard to tell without looking at it. What you can do is to replace front brakes and test drive it, if you feel that your car brakes works just fine you do not need to replace rear brake shoes.
Good brakes are essential for keeping you safe on the highways. As it happens, consistently squeaky brakes might be something major, or just normal brake sounds. Either way, get it checked by a professional, just to be on the safe side.
They need replaced when they wear out.
Your brake rotors are warped and need replaced/resurfaced.
If the parking brake does not engage fully, the rear (shoe type) brakes need to be adjusted or replaced.
Could be that the rotors are "out of round" and need either to be resurfaced or replaced
Rotors may be out of "round" (lateral runout) and need to be resurfaced or replaced