Camber is when your wheel is no longer straight up and down....when you lower a car...it creates NEGATIVE camber..that is when your wheel kinda tilts in at the top....that will make your tires wear really fast on the inside.....POSITIVE camber is when the top tilts out...VERY rarely does this happen when you lower a car....however...camber isnt the only problem that arises out of altering the stock ride height of a vehicle....you also have TOE-IN...in which your wheels angle in towards each other....kinda like turning your steering wheel...but the both turn in towards each other...instead of in one direction or another.....then you have the most complicated of the 3..CASTER...Caster is the angle to which the steering pivot point is tilted forward or rearward from vertical, as viewed from the side. If the pivot Point is tilted backward (that is, the top pivot is positioned farther rearward than the bottom pivot), then the caster is positive; if it's tilted forward, then the caster is negative....hope this helps clear things up for ya bro.....
