First of all, it sounds like you car is lowered more than 1.5" Also, you need to make sure you get a camber kit for the front and possibly the rear to correct your camber, as it is always affected when lowering a car more than 1.5" However, your "toe" is also highly affected when lowering a car. You need to get to an alignment shop immediately to get this corrected as much as possible if you cannot get a camber kit right away. If not, you will just keep going through those tires buddy.
Hint* get some cheepo tires for the time being so your not wearing through some good ones like Falken Azenis!
EDIT* Toe causes tire wear faster than your camber does