wheels are so much fun. Here's my secret recipe. Draw the transversal axle pointing to the vanishing point. Pop an ellipse centered on the axle. Rotate the ellipse 90° from the axle. Copy the ellipse keeping the same ratio, and distribute them along the axle. job done. As you can see on the motorcycle wheel, the perspective is actually wrong once you reach a wide angle effect, but it will work in most case. Hell, the Egyptians built a millennium empire without the use of the wheel, you should be able to build a few sketches with a bended one.