I am car-dumb and have noticed lately that when I put my car into brake it rolls forward or back before fully stopping.  For example, I drive in my driveway and put my foot on the brake fully and then put it into park; I then let go of the break and the car rolls a little before jerking a little and stopping.
What is the cause of this? Are my brakes bad or is it something worse?
I remember reading somewhere that a little rolling is normal (maybe for a manual? but mine is automatic), but this seems like excessive rolling.
Thanks.
			
			What is the cause of this? Are my brakes bad or is it something worse?
I remember reading somewhere that a little rolling is normal (maybe for a manual? but mine is automatic), but this seems like excessive rolling.
Thanks.
				
		
			