Let’s learn how to draw rims with a fairly accurate geometry.

Start with a circle and draw a line from the center to the top. This is the first spoke.3 spoke rims 1

 

No draw a line from the center to bottom and divide it in half. This is a guide line so draw it lightly.3 spoke rims 2Draw a horizontal line across the middle of the previous line all the way to the edges of the circle.

3 spoke rims 3

 

Now draw a couple of lines from these two intersection points to the center.3 spoke rims 4

Here we have a three spoke rim.3 spoke rims 5

If you want a six spokes just extend each spoke all the way to the other side of the circle.3 spoke rims 6