Abstract: The present invention is directed to an in-line roller skate having a main frame with a front, a back, a top side and an underside, and having an attachment mechanism on the top side of the main frame for attachment of the in-line roller skate to the foot of the user and having an in-line skating wheel attachment frame on the underside of the main frame, with a plurality of in-line skating wheels thereon. The skate has a side motion wheel support and a plurality of side wheels rotatably connected to the support, arranged at approximately right angles to the skating wheels. The side wheels are arranged such that when the roller skate is placed on a flat surface upright with the skating wheels vertical, the skating wheels contact the flat surface and the side wheels do not, and when the roller skate is placed on the flat surface and tilted beyond a predetermined contact angle from vertical, the side wheels do contact the flat surface.