You will want to get a bump steer kit with them. Any time you lower your car you are throwing the Geometry off a little. Some people live with it, which you can do with no harm, but most rides become more stiff and different driving feel. But it is all up to you how much money you want to spend. Most go with steeda springs
www.steeda.com and if they want they buy a bumpsteer kit. hope this helps out a little.