No offense to the previous posters, but read this first.

MOST important:
Get an alignment. Get your toe in spec, or set to zero on all four tires.

When you adjust your ride height and/or your camber, your toe is adversely affected. When you get a coilover kit, you adjust in this order:

1. Ride height
2. Camber
3. Toe

Toe is the last to adjust, but since you cannot adjust camber with the stock equipment and your ride height is pre-determined by your springs (except on an adjustable coilover), you better adjust your toe or you will have bad tire wear. Adding camber gives you toe in. subtracting camber gives you toe out. And in a hurry I might add...and this causes BAD tire wear.

I have 3 degrees of camber in front and 2.5 degrees in rear on my street car. I have PERFECT tire wear. No extra wear at all. Why? I adjusted my height, then my camber, FINALLY I adjusted Toe to 0 front and rear... no problems.

Camber wear is a misnomer - it is really toe wear due to lowering and adding camber. (over 4 degrees of toe and you WILL have odd wear depending on the tire)

Everyone should keep this in mind. It's an undisputable fact.