Rook, do what Shambler said - instead of converting the euler angles back to degrees just use a variable together with RotateEntity and track the variable value. If you have 10 positions on your wheel that would be 360 / 10 = 36 degrees for each position. So your wheel positions would be something like this:
0 = 0
1 = 36
2 = 72
...yada yada
0 = 0
1 = 36
2 = 72
...yada yada