Actually BBoy is somewhat correct as the shocks are designed for a range of travel. If you lower the car without changing the shocls to accomodate the new range of motion you do have the POTENTIAL for a bad ride. Now how long it takes for the bad ride to happen depends on the quality of the shocks or struts, remember that factory stuff on the low end vehicles ie Cobalts, Cavaliers, Focus, Neons, etc are the cheapest so they will fail faster. By lowering the vehicle and not changing struts or shocks, the old parts are under severe compression and will fail faster than without lowering. Had a buddy with a Stang that after about 6-8 months literally blew out his shocks because he didnt get lowering shocks.