Lowering Springs?

Hey, i was just wondering if anyone has put only lowering springs on their car without any other suspension mods or anything. Cause i wanna lower my car about 1.5 inches, but i dont have money for anything more than just lowering springs.

If i got lowering springs installed would i be bottoming out over every single speed bump and dip or what?

Any help or info would be appriciated.


Thanks,