prob the other day i was driving pushed break pedal & they got real hard damn near had to stand up on them to get to stop drove a little bit longer and cleared up,r my breaks about to fail or do i need to do maintenance on breaks.i noticed when they r working properly the break light comes on when i push them.the other ? is dealing with my rear when i turn right or on a road curving 2 the right i hear a rubbing or grinding noise quiets up when the car straighten up.any help would b grateful ?