Abstract: An improved shim arrangement for adjusting the camber of a wheel in a steerable driving axle assembly, such as a front axle assembly of a four wheel drive vehicle. The shim arrangement involves a large number of tapered shims of resilient non-metallic material of high compressive strength at yield, each of which has a different maximum dimension and each of which preferably has a color corresponding to the maximum dimension of the shim. In use, a shim of the required thickness is inserted between two sections of the axle housing to adjust the angle between them and hence the camber of the wheel. Because the shims are colored, it is possible to identify the particular shim that has been used after the axle assembly has been reassembled after insertion of the shim. The shims are of a resilient plastic material such as 40% glass filled nylon. Each shim preferably has an annular rib adjacent its inner wall which engages the adjacent surfaces of the housing, or an adjacent shim, and acts as a seal.