Normally if u lower a cars suspension u will get what they call 'Tram lineing' which the car feels like its on its own rails and will go where it wants when u go over a bump.

Every car i have had which ive lowered or changed the wheels on, ive experienced it. Problerly worse on MK4 escorts cause to be honest they int the newset cars around now!

Got used to mine now, so int dont bother me!