>>1332851I how far does it feel wrong?
You use the magic of layers to copy over guidelines and never erase them until the end.
A turned wheel has its circle basically turned into an ellipse. So you draw the circle it would have when being viewed directly, squash it into the ellipse, then copy that ellipse for a guide of the other side and shift it the wheels width, then keep in mind that the rules of perspective mean that the two circles would not exactly point the same direction but the distance is slightly smaller at the side that points away from the viewer, so drag the "farther" side of one ellipse a bit to the other one. From then connect the two circles at top and bottom to get the rolling surface.
Then the same with two smaller ellipses for the part with the spokes. The shifted copy will be your part that is left visible trough the spokes.
These are now your guidelines, obviously these perfect circles are very sharp whereas a real wheel would be smoother and have rounded bulges for the shape of its rolling surface.
But that is your skeleton, if you could now be arsed you could work with it and use it as guide to create a more realistic wheel.
Only when you are completely done you remove the parts that would not be visible.
Graphic software offers so many helpful features like layers as copies and transforming, use them.
