We have looked at creating an automatically rotating wheel which a number of posts on this site, that span a number of applications. Rigging a wheel in Maya, Cinema 4D, Blender, etc, although not so straight forward, all encompass more or less the same implementations.
explores motion and rigging using Houdini’s procedural power
Here, Andrew Lowell who is the lead FX TD instructor for Lost Boys Studios, shows how the procedural premise of Houdini can make complex rigging tasks a pretty straight forward task.
If you have rigged a wheel in any other application, you should check this out to find out how to use a few expressions, logic and some CHops can turn a complex rigging task into a simple rig.
