This investigation was undertaken to determine the effect of different types of wheel lacings. Five different types of lacings were used, including radial spokes, tangential spokes, and a combination of both; having the hubs centered or "offcenter" as a bracing for side thrust; and having the spokes in the bead seat of the rim only and in both the bead seat and the "drop center" of the rim. ... When brakes are to be installed on airplane wheels, the most suitable type of wheel lacing in the triple lace or auto type. This will be true whether the installation of brakes is partial or complete, and applies to all types of airplanes. When brakes are not installed, the most suitable types are the present standard Air Service wheel, radial spokes to drop center and bead seat, or the radial spoke laced to the bead seat only. In general, the satisfactory performance of wheels having brakes installed requires the use of tangential spokes, and when no brakes are installed the radial spoke is most satisfactory from a service and a manufacturing viewpoint.