Originally Posted by MOTRONIX
i take it you havent performed a 4 wheel alignment when the springs were installed? if not, get it done , thats the reason why you are chewing tires up. when the car is lowered you are going to increase negative camber, and thus cause the toe specs to go out to lunch. they have to be adjusted to spec or 'other' specs to improve tire wear. but unfortunatly only toe can be adjusted on the front only, if your car doesnt have bushing adjustment kits throughout the chassis. the car will drive a hell of alot better when its aligned
As stated, the alignment won't change much. Rotating tires often or adding camber adjustable bushings or screws at the back is the only solution.