A longitudinally and radially formable wing tip lagging that can be formed to match non-linear wing tip profiles. The longitudinally and radially formable wing tip lagging serves as a wear surface that can be replaced as it is worn rather than wearing down the ferrous or non-ferrous wing tips permanently affixed to the outermost positions of the wing pulley. The wing tip lagging includes a backing plate and a sacrificial stratum. The backing plate is the primary structural component and it includes a plurality of bending features that facilitate both longitudinal and radial forming of the wing tip lagging. The bending features may include a plurality of notches or slots formed along the backing plate. For example, the notches may be arranged in a regular repeating pattern along the length of the backing plate.