lowering the car should not change the toe as posted before.
it will increase the neg CAMBER, tilt of the tire. to much will wear the inside edge of your tire.
it will remove positive CASTER and add neg, angle of the upper ball joint to lower ball joint. positive caster aids in high speed stability. neg caster will make your steering wheel feel weird and the car will wander in the lane by it's self. think of a wheel on a shopping cart, this is a example of neg caster. this shouldn't add to tire wear much.