Ring spin is usually a result of Unidirectional Honing. Ring spin causes severe localised wear at the top or bottom of the bore. It is usually more pronounced at the bottom where less pressure is forced on the rings. This hone pattern moves the ring around the piston during its travel up and down the bore. When the piston ring reaches bottom dead centre little or no pressure is applied to the ring so it can keep turning or spinning while the piston stops to change direction. This problem will cause pre-mature wear and is very easily recognisable upon strip down.