A wheel casing including a body portion configured to be positioned along an inboard sidewall of a tire having an axis of rotation and at least a front strake positionable over tread of the tire. The front strake having a first edge adjacent the body portion and extending outwardly to a second edge of the front strake that terminates at or inboard of an outboard side of the tire, the front strake defining a lower edge and an upper edge, the lower edge and the upper edge both configured to be positioned forward of the axis of rotation, and tread of the tire positioned rearward of the upper edge is uncovered by the wheel casing.